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, 150 deletions

diff --git a/src/random-seed/Makefile b/src/random-seed/Makefile
deleted file mode 120000
index d0b0e8e008..0000000000
--- a/src/random-seed/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-../Makefile
\ No newline at end of file
diff --git a/src/random-seed/random-seed.c b/src/random-seed/random-seed.c
deleted file mode 100644
index fdcaa1e154..0000000000
--- a/src/random-seed/random-seed.c
+++ /dev/null
@@ -1,149 +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 "log.h"
-#include "util.h"
-#include "mkdir.h"
-
-#define POOL_SIZE_MIN 512
-
-int main(int argc, char *argv[]) {
-        int seed_fd = -1, random_fd = -1;
-        int ret = EXIT_FAILURE;
-        void* buf;
-        size_t buf_size = 0;
-        ssize_t r;
-        FILE *f;
-
-        if (argc != 2) {
-                log_error("This program requires one argument.");
-                return EXIT_FAILURE;
-        }
-
-        log_set_target(LOG_TARGET_AUTO);
-        log_parse_environment();
-        log_open();
-
-        umask(0022);
-
-        /* Read pool size, if possible */
-        if ((f = fopen("/proc/sys/kernel/random/poolsize", "re"))) {
-                if (fscanf(f, "%zu", &buf_size) > 0) {
-                        /* poolsize is in bits on 2.6, but we want bytes */
-                        buf_size /= 8;
-                }
-
-                fclose(f);
-        }
-
-        if (buf_size <= POOL_SIZE_MIN)
-                buf_size = POOL_SIZE_MIN;
-
-        if (!(buf = malloc(buf_size))) {
-                log_error("Failed to allocate buffer.");
-                goto finish;
-        }
-
-        if (mkdir_parents_label(RANDOM_SEED, 0755) < 0) {
-                log_error("Failed to create directories parents of %s: %m", RANDOM_SEED);
-                goto finish;
-        }
-
-        /* When we load the seed we read it and write it to the device
-         * and then immediately update the saved seed with new data,
-         * to make sure the next boot gets seeded differently. */
-
-        if (streq(argv[1], "load")) {
-
-                if ((seed_fd = open(RANDOM_SEED, O_RDWR|O_CLOEXEC|O_NOCTTY|O_CREAT, 0600)) < 0) {
-                        if ((seed_fd = open(RANDOM_SEED, O_RDONLY|O_CLOEXEC|O_NOCTTY)) < 0) {
-                                log_error("Failed to open random seed: %m");
-                                goto finish;
-                        }
-                }
-
-                if ((random_fd = open("/dev/urandom", O_RDWR|O_CLOEXEC|O_NOCTTY, 0600)) < 0) {
-                        if ((random_fd = open("/dev/urandom", O_WRONLY|O_CLOEXEC|O_NOCTTY, 0600)) < 0) {
-                                log_error("Failed to open /dev/urandom: %m");
-                                goto finish;
-                        }
-                }
-
-                if ((r = loop_read(seed_fd, buf, buf_size, false)) <= 0) {
-
-                        if (r != 0)
-                                log_error("Failed to read seed file: %m");
-                } else {
-                        lseek(seed_fd, 0, SEEK_SET);
-
-                        if ((r = loop_write(random_fd, buf, (size_t) r, false)) <= 0)
-                                log_error("Failed to write seed to /dev/urandom: %s",
-                                          r < 0 ? strerror(errno) : "short write");
-                }
-
-        } else if (streq(argv[1], "save")) {
-
-                if ((seed_fd = open(RANDOM_SEED, O_WRONLY|O_CLOEXEC|O_NOCTTY|O_CREAT, 0600)) < 0) {
-                        log_error("Failed to open random seed: %m");
-                        goto finish;
-                }
-
-                if ((random_fd = open("/dev/urandom", O_RDONLY|O_CLOEXEC|O_NOCTTY)) < 0) {
-                        log_error("Failed to open /dev/urandom: %m");
-                        goto finish;
-                }
-        } else {
-                log_error("Unknown verb %s.", argv[1]);
-                goto finish;
-        }
-
-        /* This is just a safety measure. Given that we are root and
-         * most likely created the file ourselves the mode and owner
-         * should be correct anyway. */
-        fchmod(seed_fd, 0600);
-        fchown(seed_fd, 0, 0);
-
-        if ((r = loop_read(random_fd, buf, buf_size, false)) <= 0)
-                log_error("Failed to read new seed from /dev/urandom: %s", r < 0 ? strerror(errno) : "EOF");
-        else {
-                if ((r = loop_write(seed_fd, buf, (size_t) r, false)) <= 0)
-                        log_error("Failed to write new random seed file: %s", r < 0 ? strerror(errno) : "short write");
-        }
-
-        ret = EXIT_SUCCESS;
-
-finish:
-        if (random_fd >= 0)
-                close_nointr_nofail(random_fd);
-
-        if (seed_fd >= 0)
-                close_nointr_nofail(seed_fd);
-
-        free(buf);
-
-        return ret;
-}