Isolation of udev code from remaining systemd

This commit is a first attempt to isolate the udev code from the
remaining code base.  It intentionally does not modify any files
but purely delete files which, on a first examination, appear to
not be needed.  This is a sweeping commit which may easily have
missed needed code.  Files can be retrieved by doing a checkout
from the previous commit:

 git checkout 2944f347d0 -- <filename>

2 files changed, 0 insertions, 452 deletions

diff --git a/src/initctl/Makefile b/src/initctl/Makefile
deleted file mode 120000
index d0b0e8e008..0000000000
--- a/src/initctl/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-../Makefile
\ No newline at end of file
diff --git a/src/initctl/initctl.c b/src/initctl/initctl.c
deleted file mode 100644
index 0eb008d9e6..0000000000
--- a/src/initctl/initctl.c
+++ /dev/null
@@ -1,451 +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 Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 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
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <assert.h>
-#include <time.h>
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-#include <unistd.h>
-#include <sys/poll.h>
-#include <sys/epoll.h>
-#include <sys/un.h>
-#include <fcntl.h>
-#include <ctype.h>
-
-#include <dbus/dbus.h>
-#include <systemd/sd-daemon.h>
-
-#include "util.h"
-#include "log.h"
-#include "list.h"
-#include "initreq.h"
-#include "special.h"
-#include "dbus-common.h"
-#include "def.h"
-
-#define SERVER_FD_MAX 16
-#define TIMEOUT_MSEC ((int) (DEFAULT_EXIT_USEC/USEC_PER_MSEC))
-
-typedef struct Fifo Fifo;
-
-typedef struct Server {
-        int epoll_fd;
-
-        LIST_HEAD(Fifo, fifos);
-        unsigned n_fifos;
-
-        DBusConnection *bus;
-
-        bool quit;
-} Server;
-
-struct Fifo {
-        Server *server;
-
-        int fd;
-
-        struct init_request buffer;
-        size_t bytes_read;
-
-        LIST_FIELDS(Fifo, fifo);
-};
-
-static const char *translate_runlevel(int runlevel, bool *isolate) {
-        static const struct {
-                const int runlevel;
-                const char *special;
-                bool isolate;
-        } table[] = {
-                { '0', SPECIAL_POWEROFF_TARGET,  false },
-                { '1', SPECIAL_RESCUE_TARGET,    true  },
-                { 's', SPECIAL_RESCUE_TARGET,    true  },
-                { 'S', SPECIAL_RESCUE_TARGET,    true  },
-                { '2', SPECIAL_RUNLEVEL2_TARGET, true  },
-                { '3', SPECIAL_RUNLEVEL3_TARGET, true  },
-                { '4', SPECIAL_RUNLEVEL4_TARGET, true  },
-                { '5', SPECIAL_RUNLEVEL5_TARGET, true  },
-                { '6', SPECIAL_REBOOT_TARGET,    false },
-        };
-
-        unsigned i;
-
-        assert(isolate);
-
-        for (i = 0; i < ELEMENTSOF(table); i++)
-                if (table[i].runlevel == runlevel) {
-                        *isolate = table[i].isolate;
-                        if (runlevel == '6' && kexec_loaded())
-                                return SPECIAL_KEXEC_TARGET;
-                        return table[i].special;
-                }
-
-        return NULL;
-}
-
-static void change_runlevel(Server *s, int runlevel) {
-        const char *target;
-        DBusMessage *m = NULL, *reply = NULL;
-        DBusError error;
-        const char *mode;
-        bool isolate = false;
-
-        assert(s);
-
-        dbus_error_init(&error);
-
-        if (!(target = translate_runlevel(runlevel, &isolate))) {
-                log_warning("Got request for unknown runlevel %c, ignoring.", runlevel);
-                goto finish;
-        }
-
-        if (isolate)
-                mode = "isolate";
-        else
-                mode = "replace";
-
-        log_debug("Running request %s/start/%s", target, mode);
-
-        if (!(m = dbus_message_new_method_call("org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartUnit"))) {
-                log_error("Could not allocate message.");
-                goto finish;
-        }
-
-        if (!dbus_message_append_args(m,
-                                      DBUS_TYPE_STRING, &target,
-                                      DBUS_TYPE_STRING, &mode,
-                                      DBUS_TYPE_INVALID)) {
-                log_error("Could not attach target and flag information to message.");
-                goto finish;
-        }
-
-        if (!(reply = dbus_connection_send_with_reply_and_block(s->bus, m, -1, &error))) {
-                log_error("Failed to start unit: %s", bus_error_message(&error));
-                goto finish;
-        }
-
-finish:
-        if (m)
-                dbus_message_unref(m);
-
-        if (reply)
-                dbus_message_unref(reply);
-
-        dbus_error_free(&error);
-}
-
-static void request_process(Server *s, const struct init_request *req) {
-        assert(s);
-        assert(req);
-
-        if (req->magic != INIT_MAGIC) {
-                log_error("Got initctl request with invalid magic. Ignoring.");
-                return;
-        }
-
-        switch (req->cmd) {
-
-        case INIT_CMD_RUNLVL:
-                if (!isprint(req->runlevel))
-                        log_error("Got invalid runlevel. Ignoring.");
-                else
-                        switch (req->runlevel) {
-
-                        /* we are async anyway, so just use kill for reexec/reload */
-                        case 'u':
-                        case 'U':
-                                if (kill(1, SIGTERM) < 0)
-                                        log_error("kill() failed: %m");
-
-                                /* The bus connection will be
-                                 * terminated if PID 1 is reexecuted,
-                                 * hence let's just exit here, and
-                                 * rely on that we'll be restarted on
-                                 * the next request */
-                                s->quit = true;
-                                break;
-
-                        case 'q':
-                        case 'Q':
-                                if (kill(1, SIGHUP) < 0)
-                                        log_error("kill() failed: %m");
-                                break;
-
-                        default:
-                                change_runlevel(s, req->runlevel);
-                        }
-                return;
-
-        case INIT_CMD_POWERFAIL:
-        case INIT_CMD_POWERFAILNOW:
-        case INIT_CMD_POWEROK:
-                log_warning("Received UPS/power initctl request. This is not implemented in systemd. Upgrade your UPS daemon!");
-                return;
-
-        case INIT_CMD_CHANGECONS:
-                log_warning("Received console change initctl request. This is not implemented in systemd.");
-                return;
-
-        case INIT_CMD_SETENV:
-        case INIT_CMD_UNSETENV:
-                log_warning("Received environment initctl request. This is not implemented in systemd.");
-                return;
-
-        default:
-                log_warning("Received unknown initctl request. Ignoring.");
-                return;
-        }
-}
-
-static int fifo_process(Fifo *f) {
-        ssize_t l;
-
-        assert(f);
-
-        errno = EIO;
-        if ((l = read(f->fd, ((uint8_t*) &f->buffer) + f->bytes_read, sizeof(f->buffer) - f->bytes_read)) <= 0) {
-
-                if (errno == EAGAIN)
-                        return 0;
-
-                log_warning("Failed to read from fifo: %s", strerror(errno));
-                return -1;
-        }
-
-        f->bytes_read += l;
-        assert(f->bytes_read <= sizeof(f->buffer));
-
-        if (f->bytes_read == sizeof(f->buffer)) {
-                request_process(f->server, &f->buffer);
-                f->bytes_read = 0;
-        }
-
-        return 0;
-}
-
-static void fifo_free(Fifo *f) {
-        assert(f);
-
-        if (f->server) {
-                assert(f->server->n_fifos > 0);
-                f->server->n_fifos--;
-                LIST_REMOVE(Fifo, fifo, f->server->fifos, f);
-        }
-
-        if (f->fd >= 0) {
-                if (f->server)
-                        epoll_ctl(f->server->epoll_fd, EPOLL_CTL_DEL, f->fd, NULL);
-
-                close_nointr_nofail(f->fd);
-        }
-
-        free(f);
-}
-
-static void server_done(Server *s) {
-        assert(s);
-
-        while (s->fifos)
-                fifo_free(s->fifos);
-
-        if (s->epoll_fd >= 0)
-                close_nointr_nofail(s->epoll_fd);
-
-        if (s->bus) {
-                dbus_connection_flush(s->bus);
-                dbus_connection_close(s->bus);
-                dbus_connection_unref(s->bus);
-        }
-}
-
-static int server_init(Server *s, unsigned n_sockets) {
-        int r;
-        unsigned i;
-        DBusError error;
-
-        assert(s);
-        assert(n_sockets > 0);
-
-        dbus_error_init(&error);
-
-        zero(*s);
-
-        if ((s->epoll_fd = epoll_create1(EPOLL_CLOEXEC)) < 0) {
-                r = -errno;
-                log_error("Failed to create epoll object: %s", strerror(errno));
-                goto fail;
-        }
-
-        for (i = 0; i < n_sockets; i++) {
-                struct epoll_event ev;
-                Fifo *f;
-                int fd;
-
-                fd = SD_LISTEN_FDS_START+i;
-
-                if ((r = sd_is_fifo(fd, NULL)) < 0) {
-                        log_error("Failed to determine file descriptor type: %s", strerror(-r));
-                        goto fail;
-                }
-
-                if (!r) {
-                        log_error("Wrong file descriptor type.");
-                        r = -EINVAL;
-                        goto fail;
-                }
-
-                if (!(f = new0(Fifo, 1))) {
-                        r = -ENOMEM;
-                        log_error("Failed to create fifo object: %s", strerror(errno));
-                        goto fail;
-                }
-
-                f->fd = -1;
-
-                zero(ev);
-                ev.events = EPOLLIN;
-                ev.data.ptr = f;
-                if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) {
-                        r = -errno;
-                        fifo_free(f);
-                        log_error("Failed to add fifo fd to epoll object: %s", strerror(errno));
-                        goto fail;
-                }
-
-                f->fd = fd;
-                LIST_PREPEND(Fifo, fifo, s->fifos, f);
-                f->server = s;
-                s->n_fifos ++;
-        }
-
-        if (bus_connect(DBUS_BUS_SYSTEM, &s->bus, NULL, &error) < 0) {
-                log_error("Failed to get D-Bus connection: %s", bus_error_message(&error));
-                goto fail;
-        }
-
-        return 0;
-
-fail:
-        server_done(s);
-
-        dbus_error_free(&error);
-        return r;
-}
-
-static int process_event(Server *s, struct epoll_event *ev) {
-        int r;
-        Fifo *f;
-
-        assert(s);
-
-        if (!(ev->events & EPOLLIN)) {
-                log_info("Got invalid event from epoll. (3)");
-                return -EIO;
-        }
-
-        f = (Fifo*) ev->data.ptr;
-
-        if ((r = fifo_process(f)) < 0) {
-                log_info("Got error on fifo: %s", strerror(-r));
-                fifo_free(f);
-                return r;
-        }
-
-        return 0;
-}
-
-int main(int argc, char *argv[]) {
-        Server server;
-        int r = EXIT_FAILURE, n;
-
-        if (getppid() != 1) {
-                log_error("This program should be invoked by init only.");
-                return EXIT_FAILURE;
-        }
-
-        if (argc > 1) {
-                log_error("This program does not take arguments.");
-                return EXIT_FAILURE;
-        }
-
-        log_set_target(LOG_TARGET_AUTO);
-        log_parse_environment();
-        log_open();
-
-        umask(0022);
-
-        if ((n = sd_listen_fds(true)) < 0) {
-                log_error("Failed to read listening file descriptors from environment: %s", strerror(-r));
-                return EXIT_FAILURE;
-        }
-
-        if (n <= 0 || n > SERVER_FD_MAX) {
-                log_error("No or too many file descriptors passed.");
-                return EXIT_FAILURE;
-        }
-
-        if (server_init(&server, (unsigned) n) < 0)
-                return EXIT_FAILURE;
-
-        log_debug("systemd-initctl running as pid %lu", (unsigned long) getpid());
-
-        sd_notify(false,
-                  "READY=1\n"
-                  "STATUS=Processing requests...");
-
-        while (!server.quit) {
-                struct epoll_event event;
-                int k;
-
-                if ((k = epoll_wait(server.epoll_fd,
-                                    &event, 1,
-                                    TIMEOUT_MSEC)) < 0) {
-
-                        if (errno == EINTR)
-                                continue;
-
-                        log_error("epoll_wait() failed: %s", strerror(errno));
-                        goto fail;
-                }
-
-                if (k <= 0)
-                        break;
-
-                if (process_event(&server, &event) < 0)
-                        goto fail;
-        }
-
-        r = EXIT_SUCCESS;
-
-        log_debug("systemd-initctl stopped as pid %lu", (unsigned long) getpid());
-
-fail:
-        sd_notify(false,
-                  "STATUS=Shutting down...");
-
-        server_done(&server);
-
-        dbus_shutdown();
-
-        return r;
-}