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>

1 files changed, 0 insertions, 170 deletions

diff --git a/src/remount-fs/remount-fs.c b/src/remount-fs/remount-fs.c
deleted file mode 100644
index b49d095cbb..0000000000
--- a/src/remount-fs/remount-fs.c
+++ /dev/null
@@ -1,170 +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 <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <mntent.h>
-
-#include "log.h"
-#include "util.h"
-#include "path-util.h"
-#include "set.h"
-#include "mount-setup.h"
-#include "exit-status.h"
-
-/* Goes through /etc/fstab and remounts all API file systems, applying
- * options that are in /etc/fstab that systemd might not have
- * respected */
-
-int main(int argc, char *argv[]) {
-        int ret = EXIT_FAILURE;
-        FILE *f = NULL;
-        struct mntent* me;
-        Hashmap *pids = NULL;
-
-        if (argc > 1) {
-                log_error("This program takes no argument.");
-                return EXIT_FAILURE;
-        }
-
-        log_set_target(LOG_TARGET_AUTO);
-        log_parse_environment();
-        log_open();
-
-        umask(0022);
-
-        f = setmntent("/etc/fstab", "r");
-        if (!f) {
-                if (errno == ENOENT) {
-                        ret = EXIT_SUCCESS;
-                        goto finish;
-                }
-
-                log_error("Failed to open /etc/fstab: %m");
-                goto finish;
-        }
-
-        pids = hashmap_new(trivial_hash_func, trivial_compare_func);
-        if (!pids) {
-                log_error("Failed to allocate set");
-                goto finish;
-        }
-
-        ret = EXIT_SUCCESS;
-
-        while ((me = getmntent(f))) {
-                pid_t pid;
-                int k;
-                char *s;
-
-                /* Remount the root fs, /usr and all API VFS */
-                if (!mount_point_is_api(me->mnt_dir) &&
-                    !path_equal(me->mnt_dir, "/") &&
-                    !path_equal(me->mnt_dir, "/usr"))
-                        continue;
-
-                log_debug("Remounting %s", me->mnt_dir);
-
-                pid = fork();
-                if (pid < 0) {
-                        log_error("Failed to fork: %m");
-                        ret = EXIT_FAILURE;
-                        continue;
-                }
-
-                if (pid == 0) {
-                        const char *arguments[5];
-                        /* Child */
-
-                        arguments[0] = "/bin/mount";
-                        arguments[1] = me->mnt_dir;
-                        arguments[2] = "-o";
-                        arguments[3] = "remount";
-                        arguments[4] = NULL;
-
-                        execv("/bin/mount", (char **) arguments);
-
-                        log_error("Failed to execute /bin/mount: %m");
-                        _exit(EXIT_FAILURE);
-                }
-
-                /* Parent */
-
-                s = strdup(me->mnt_dir);
-                if (!s) {
-                        log_oom();
-                        ret = EXIT_FAILURE;
-                        continue;
-                }
-
-
-                k = hashmap_put(pids, UINT_TO_PTR(pid), s);
-                if (k < 0) {
-                        log_error("Failed to add PID to set: %s", strerror(-k));
-                        ret = EXIT_FAILURE;
-                        continue;
-                }
-        }
-
-        while (!hashmap_isempty(pids)) {
-                siginfo_t si;
-                char *s;
-
-                zero(si);
-                if (waitid(P_ALL, 0, &si, WEXITED) < 0) {
-
-                        if (errno == EINTR)
-                                continue;
-
-                        log_error("waitid() failed: %m");
-                        ret = EXIT_FAILURE;
-                        break;
-                }
-
-                s = hashmap_remove(pids, UINT_TO_PTR(si.si_pid));
-                if (s) {
-                        if (!is_clean_exit(si.si_code, si.si_status, NULL)) {
-                                if (si.si_code == CLD_EXITED)
-                                        log_error("/bin/mount for %s exited with exit status %i.", s, si.si_status);
-                                else
-                                        log_error("/bin/mount for %s terminated by signal %s.", s, signal_to_string(si.si_status));
-
-                                ret = EXIT_FAILURE;
-                        }
-
-                        free(s);
-                }
-        }
-
-finish:
-
-        if (pids)
-                hashmap_free_free(pids);
-
-        if (f)
-                endmntent(f);
-
-        return ret;
-}