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dracut: New package.

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This commit is contained in:
Michael Tremer
2010-07-17 17:57:40 +02:00
parent 6f21706dda
commit 41c0d0cab7
4 changed files with 298 additions and 0 deletions
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83
lfs/dracut Normal file
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@@ -0,0 +1,83 @@
###############################################################################
# #
# IPFire.org - A linux based firewall #
# Copyright (C) 2007 Michael Tremer & Christian Schmidt #
# #
# This program 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 3 of the License, or #
# (at your option) any later version. #
# #
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>. #
# #
###############################################################################
###############################################################################
# Definitions
###############################################################################
include Config
VER = 006
THISAPP = dracut-$(VER)
DL_FILE = $(THISAPP).tar.bz2
DL_FROM = $(URL_IPFIRE)
DIR_APP = $(DIR_SRC)/$(THISAPP)
TARGET = $(DIR_INFO)/$(THISAPP)
###############################################################################
# Top-level Rules
###############################################################################
objects = $(DL_FILE)
$(DL_FILE) = $(DL_FROM)/$(DL_FILE)
$(DL_FILE)_MD5 = 016052b57001789ec2acf89d382a82f5
install : $(TARGET)
check : $(patsubst %,$(DIR_CHK)/%,$(objects))
download :$(patsubst %,$(DIR_DL)/%,$(objects))
md5 : $(subst %,%_MD5,$(objects))
###############################################################################
# Downloading, checking, md5sum
###############################################################################
$(patsubst %,$(DIR_CHK)/%,$(objects)) :
@$(CHECK)
$(patsubst %,$(DIR_DL)/%,$(objects)) :
@$(LOAD)
$(subst %,%_MD5,$(objects)) :
@$(MD5)
###############################################################################
# Installation Details
###############################################################################
$(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
@$(PREBUILD)
@rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar jxf $(DIR_DL)/$(DL_FILE)
cd $(DIR_APP) && cp -vf $(DIR_SRC)/src/dracut/switch_root.c .
cd $(DIR_APP) && make $(MAKETUNING) WITH_SWITCH_ROOT=1
cd $(DIR_APP) && make install WITH_SWITCH_ROOT=1 \
sysconfdir=/etc
rm -rf /usr/share/dracut/modules.d/*{dash,fips,redhat-i18n,rpmversion,network,ifcfg,plymouth,btrfs,crypt,dm,dmraid,dmsquash-live,lvm,mdraid,multipath,dasd,fcoe,iscsi,nbd,nfs,resume,uswsusp,zfcp,znet,selinux}
@rm -rf $(DIR_APP)
@$(POSTBUILD)

1
make.sh
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@@ -376,6 +376,7 @@ buildipfire() {
ipfiremake klibc
ipfiremake mkinitcpio
ipfiremake udev KLIBC=1
ipfiremake dracut
ipfiremake expat
ipfiremake gdbm
ipfiremake gmp

26
src/dracut/dracut.conf Normal file
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# dracut config file
# Specific list of dracut modules to use
#dracutmodules+=""
# Dracut modules to omit
#omit_dracutmodules+=""
# Dracut modules to add to the default
#add_dracutmodules+=""
# additional kernel modules to the default
#add_drivers+=""
# list of kernel filesystem modules to be included in the generic initramfs
filesystems+="reiser4"
# build initrd only to boot current hardware
#hostonly="yes"
#
# install local /etc/mdadm.conf
mdadmconf="no"
# install local /etc/lvm/lvm.conf
lvmconf="no"

188
src/dracut/switch_root.c Normal file
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@@ -0,0 +1,188 @@
/*
* switchroot.c - switch to new root directory and start init.
*
* Copyright 2002-2008 Red Hat, Inc. All rights reserved.
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authors:
* Peter Jones <pjones@redhat.com>
* Jeremy Katz <katzj@redhat.com>
*/
#include <sys/mount.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <dirent.h>
#ifndef MS_MOVE
#define MS_MOVE 8192
#endif
enum {
ok,
err_no_directory,
err_usage,
};
/* remove all files/directories below dirName -- don't cross mountpoints */
static int
recursiveRemove(char * dirName)
{
struct stat sb,rb;
DIR * dir;
struct dirent * d;
char * strBuf = alloca(strlen(dirName) + 1024);
if (!(dir = opendir(dirName))) {
printf("error opening %s: %m\n", dirName);
return 0;
}
if (fstat(dirfd(dir),&rb)) {
printf("unable to stat %s: %m\n", dirName);
closedir(dir);
return 0;
}
errno = 0;
while ((d = readdir(dir))) {
errno = 0;
if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, "..")) {
errno = 0;
continue;
}
strcpy(strBuf, dirName);
strcat(strBuf, "/");
strcat(strBuf, d->d_name);
if (lstat(strBuf, &sb)) {
printf("failed to stat %s: %m\n", strBuf);
errno = 0;
continue;
}
/* only descend into subdirectories if device is same as dir */
if (S_ISDIR(sb.st_mode)) {
if (sb.st_dev == rb.st_dev) {
recursiveRemove(strBuf);
if (rmdir(strBuf))
printf("failed to rmdir %s: %m\n", strBuf);
}
errno = 0;
continue;
}
if (unlink(strBuf)) {
printf("failed to remove %s: %m\n", strBuf);
errno = 0;
continue;
}
}
if (errno) {
closedir(dir);
printf("error reading from %s: %m\n", dirName);
return 1;
}
closedir(dir);
return 0;
}
static int switchroot(const char *newroot)
{
/* Don't try to unmount the old "/", there's no way to do it. */
const char *umounts[] = { "/dev", "/proc", "/sys", NULL };
int errnum;
int i;
for (i = 0; umounts[i] != NULL; i++) {
char newmount[PATH_MAX];
strcpy(newmount, newroot);
strcat(newmount, umounts[i]);
if (mount(umounts[i], newmount, NULL, MS_MOVE, NULL) < 0) {
fprintf(stderr, "Error mount moving old %s %s %m\n",
umounts[i], newmount);
fprintf(stderr, "Forcing unmount of %s\n", umounts[i]);
umount2(umounts[i], MNT_FORCE);
}
}
if (chdir(newroot) < 0) {
errnum=errno;
fprintf(stderr, "switchroot: chdir failed: %m\n");
errno=errnum;
return -1;
}
recursiveRemove("/");
if (mount(newroot, "/", NULL, MS_MOVE, NULL) < 0) {
errnum = errno;
fprintf(stderr, "switchroot: mount failed: %m\n");
errno = errnum;
return -1;
}
if (chroot(".")) {
errnum = errno;
fprintf(stderr, "switchroot: chroot failed: %m\n");
errno = errnum;
return -2;
}
return 1;
}
static void usage(FILE *output)
{
fprintf(output, "usage: switchroot <newrootdir> <init> <args to init>\n");
if (output == stderr)
exit(err_usage);
exit(ok);
}
int main(int argc, char *argv[])
{
char *newroot = argv[1];
char *init = argv[2];
char **initargs = &argv[2];
if (newroot == NULL || newroot[0] == '\0' ||
init == NULL || init[0] == '\0' ) {
usage(stderr);
}
if (switchroot(newroot) < 0) {
fprintf(stderr, "switchroot has failed. Sorry.\n");
return 1;
}
if (access(initargs[0], X_OK))
fprintf(stderr, "WARNING: can't access %s\n", initargs[0]);
/* get session leader */
setsid();
/* set controlling terminal */
ioctl (0, TIOCSCTTY, 1);
execv(initargs[0], initargs);
}