diff options
Diffstat (limited to 'target/ext2')
| -rw-r--r-- | target/ext2/ext2root.mk | 55 | ||||
| -rw-r--r-- | target/ext2/genext2fs.patch | 2457 |
2 files changed, 2512 insertions, 0 deletions
diff --git a/target/ext2/ext2root.mk b/target/ext2/ext2root.mk new file mode 100644 index 000000000..ff2877145 --- /dev/null +++ b/target/ext2/ext2root.mk @@ -0,0 +1,55 @@ +############################################################# +# +# genext2fs to build to target ext2 filesystems +# +############################################################# +GENEXT2_DIR=$(BUILD_DIR)/genext2fs-1.3 +GENEXT2_SOURCE=genext2fs_1.3.orig.tar.gz +GENEXT2_SITE=http://ftp.debian.org/debian/pool/main/g/genext2fs +GENEXT2_PATCH=$(SOURCE_DIR)/genext2fs.patch + +$(DL_DIR)/$(GENEXT2_SOURCE): + $(WGET) -P $(DL_DIR) $(GENEXT2_SITE)/$(GENEXT2_SOURCE) + +$(GENEXT2_DIR): $(DL_DIR)/$(GENEXT2_SOURCE) $(GENEXT2_PATCH) + zcat $(DL_DIR)/$(GENEXT2_SOURCE) | tar -C $(BUILD_DIR) -xvf - + mv $(GENEXT2_DIR).orig $(GENEXT2_DIR) + cat $(GENEXT2_PATCH) | patch -p1 -d $(GENEXT2_DIR) + +$(GENEXT2_DIR)/genext2fs: $(GENEXT2_DIR) + $(MAKE) CFLAGS="-Wall -O2 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE \ + -D_FILE_OFFSET_BITS=64" -C $(GENEXT2_DIR); + touch -c $(GENEXT2_DIR)/genext2fs + +genext2fs: $(GENEXT2_DIR)/genext2fs + + + +############################################################# +# +# Build the ext2 root filesystem image +# +############################################################# + +# How much KB we want to add to the calculated size for slack space +GENEXT2_REALSIZE=$(subst total,, $(shell LANG=C du $(TARGET_DIR) -s -c -k | grep total )) +GENEXT2_ADDTOROOTSIZE=$(shell if [ $(GENEXT2_REALSIZE) -ge 20000 ] ; then echo 16384; else echo 16; fi) +GENEXT2_SIZE=$(shell expr $(GENEXT2_REALSIZE) + $(GENEXT2_ADDTOROOTSIZE) + 200) +# We currently add about 400 device nodes, so add that into the total +GENEXT2_INODES=$(shell expr $(shell find $(TARGET_DIR) | wc -l) + 400) +#GENEXT2_SIZE=100000 + +ext2root: genext2fs + #-@find $(TARGET_DIR)/lib -type f -name \*.so\* | xargs $(STRIP) --strip-unneeded 2>/dev/null || true; + -@find $(TARGET_DIR) -type f -perm +111 | xargs $(STRIP) 2>/dev/null || true; + $(GENEXT2_DIR)/genext2fs -i $(GENEXT2_INODES) -b $(GENEXT2_SIZE) \ + -d $(TARGET_DIR) -q -D $(SOURCE_DIR)/device_table.txt $(IMAGE) + +ext2root-source: $(DL_DIR)/$(GENEXT2_SOURCE) + +ext2root-clean: + -$(MAKE) -C $(GENEXT2_DIR) clean + +ext2root-dirclean: + rm -rf $(GENEXT2_DIR) + diff --git a/target/ext2/genext2fs.patch b/target/ext2/genext2fs.patch new file mode 100644 index 000000000..73e5ce0aa --- /dev/null +++ b/target/ext2/genext2fs.patch @@ -0,0 +1,2457 @@ +diff -urN genext2fs-1.3.orig/Makefile genext2fs-1.3/Makefile +--- genext2fs-1.3.orig/Makefile 1969-12-31 17:00:00.000000000 -0700 ++++ genext2fs-1.3/Makefile 2003-04-21 01:41:42.000000000 -0600 +@@ -0,0 +1,46 @@ ++CC=gcc ++CFLAGS=-Wall -O0 -g ++ ++SRC=genext2fs.c ++OBJS=$(patsubst %.c,%.o, $(SRC)) ++ ++all: genext2fs ++INSTALL=install ++ ++genext2fs: $(OBJS) ++ $(CC) $(CFLAGS) -o $@ $(OBJS) -o $@ ++ ++$(OBJS): %.o : %.c ++ $(CC) $(CFLAGS) -c $< -o $@ ++ ++$(OBJS): Makefile ++ ++install: ++ $(INSTALL) -d $(DESTDIR)/usr/bin/ ++ $(INSTALL) -m 755 genext2fs $(DESTDIR)/usr/bin/ ++ $(INSTALL) -d $(DESTDIR)/usr/share/man/man8/ ++ $(INSTALL) -m 644 genext2fs.8 $(DESTDIR)/usr/share/man/man8/ ++ ++clean: ++ rm -rf *.o *.a core genext2fs ++ rm -rf test ext2.img ++ ++check: all ++ mkdir -p test ++ dd if=/dev/zero of=test/zero count=1 ++ ./genext2fs -b 4096 -d test ext2.img ++ ++ md5=`md5sum ext2.img | cut -f 1 -d " "`; \ ++ if [ "$$md5" != "89471302d95f96a76fbb2cff98182cde" ] ; then \ ++ echo "test failed."; \ ++ else \ ++ echo "test succeeded."; \ ++ fi ++ ++# test genext2fs by creating the image and comparing checksums ++test: all ++ sh ./test.sh ++ ++# test genext2fs by actually mounting the created image. ++test-mount: all ++ sudo sh ./test-mount.sh +diff -urN genext2fs-1.3.orig/debian/changelog genext2fs-1.3/debian/changelog +--- genext2fs-1.3.orig/debian/changelog 1969-12-31 17:00:00.000000000 -0700 ++++ genext2fs-1.3/debian/changelog 2003-04-21 01:41:42.000000000 -0600 +@@ -0,0 +1,17 @@ ++genext2fs (1.3-2) unstable; urgency=low ++ ++ * apply fix from upstream cvs that appears to fix endian bug ++ (closes: #122411) ++ * mention filesystem size limit in manpage (closes: #122729) ++ * mention that hard links are not supported in manpage ++ (closes: #155464) ++ * add sanity check at the end of the build ++ ++ -- David Kimdon <dwhedon@debian.org> Fri, 8 Mar 2002 23:17:36 -0800 ++ ++genext2fs (1.3-1) unstable; urgency=low ++ ++ * Initial Release. (closes: #105263) ++ ++ -- David Kimdon <dwhedon@debian.org> Sat, 14 Jul 2001 13:24:49 -0700 ++ +diff -urN genext2fs-1.3.orig/debian/control genext2fs-1.3/debian/control +--- genext2fs-1.3.orig/debian/control 1969-12-31 17:00:00.000000000 -0700 ++++ genext2fs-1.3/debian/control 2003-04-21 01:41:42.000000000 -0600 +@@ -0,0 +1,19 @@ ++Source: genext2fs ++Section: admin ++Priority: optional ++Maintainer: David Kimdon <dwhedon@debian.org> ++Build-Depends: debhelper (>> 3.0.0) ++Standards-Version: 3.5.2 ++ ++Package: genext2fs ++Architecture: any ++Depends: ${shlibs:Depends} ++Description: ext2 filesystem generator for embedded systems ++ `genext2fs' is meant to generate an ext2 filesystem ++ as a normal (non-root) user. It doesn't require you to mount ++ the image file to copy files on it. It doesn't even require ++ you to be the superuser to make device nodes. ++ . ++ Warning ! `genext2fs' has been designed for embedded ++ systems. As such, it will generate a filesystem for single-user ++ usage: all files/directories/etc... will belong to UID/GID 0 +diff -urN genext2fs-1.3.orig/debian/copyright genext2fs-1.3/debian/copyright +--- genext2fs-1.3.orig/debian/copyright 1969-12-31 17:00:00.000000000 -0700 ++++ genext2fs-1.3/debian/copyright 2003-04-21 01:41:42.000000000 -0600 +@@ -0,0 +1,15 @@ ++This package was debianized by David Kimdon <dwhedon@debian.org> on ++Sat, 14 Jul 2001 13:24:49 -0700. ++ ++It was downloaded from http://freshmeat.net/projects/genext2fs/ ++Upstream Author(s): Xavier Bestel <xbestel@aplio.fr> ++ ++Copyright (C) 2000 Xavier Bestel <xavier.bestel@free.fr> ++ ++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; version ++2 of the License. ++ ++On Debian systems, the complete text of the GNU General Public ++License can be found in /usr/share/common-licenses/GPL file. +diff -urN genext2fs-1.3.orig/debian/rules genext2fs-1.3/debian/rules +--- genext2fs-1.3.orig/debian/rules 1969-12-31 17:00:00.000000000 -0700 ++++ genext2fs-1.3/debian/rules 2003-04-21 01:41:42.000000000 -0600 +@@ -0,0 +1,70 @@ ++#!/usr/bin/make -f ++# Sample debian/rules that uses debhelper. ++# GNU copyright 1997 to 1999 by Joey Hess. ++ ++# Uncomment this to turn on verbose mode. ++#export DH_VERBOSE=1 ++ ++# This is the debhelper compatability version to use. ++export DH_COMPAT=2 ++ ++configure: configure-stamp ++configure-stamp: ++ dh_testdir ++ # Add here commands to configure the package. ++ # ./configure --prefix=/usr --mandir=/usr/share/man/ ++ ++ touch configure-stamp ++ ++build: configure-stamp build-stamp ++build-stamp: ++ dh_testdir ++ ++ # Add here commands to compile the package. ++ $(MAKE) ++ $(MAKE) check ++ ++ touch build-stamp ++ ++clean: ++ dh_testdir ++ dh_testroot ++ rm -f build-stamp configure-stamp ++ ++ # Add here commands to clean up after the build process. ++ -$(MAKE) clean ++ ++ dh_clean ++ ++install: build ++ dh_testdir ++ dh_testroot ++ dh_clean -k ++ dh_installdirs ++ ++ # Add here commands to install the package into debian/genext2fs. ++ $(MAKE) install DESTDIR=`pwd`/debian/genext2fs ++ ++ ++# Build architecture-independent files here. ++binary-indep: build install ++# We have nothing to do by default. ++ ++# Build architecture-dependent files here. ++binary-arch: build install ++ dh_testdir ++ dh_testroot ++ dh_installdocs ++ dh_installchangelogs ++ dh_link ++ dh_strip ++ dh_compress ++ dh_fixperms ++ dh_installdeb ++ dh_shlibdeps ++ dh_gencontrol ++ dh_md5sums ++ dh_builddeb ++ ++binary: binary-indep binary-arch ++.PHONY: build clean binary-indep binary-arch binary install configure +diff -urN genext2fs-1.3.orig/dev.txt genext2fs-1.3/dev.txt +--- genext2fs-1.3.orig/dev.txt 2000-09-28 09:03:19.000000000 -0600 ++++ genext2fs-1.3/dev.txt 1969-12-31 17:00:00.000000000 -0700 +@@ -1,94 +0,0 @@ +-drwx /dev +-crw- 10,190 /dev/lcd +-crw- 10,191 /dev/splc781 +-crw- 4,0 /dev/console +-crw- 5,64 /dev/cua0 +-crw- 5,65 /dev/cua1 +-crw- 5,66 /dev/cua2 +-crw- 5,70 /dev/cua6 +-crw- 5,71 /dev/cua7 +-crw- 5,72 /dev/cua8 +-crw- 5,73 /dev/cua9 +-crw- 29,0 /dev/fb0 +-crw- 29,32 /dev/fb1 +-crw- 1,2 /dev/kmem +-crw- 1,1 /dev/mem +-crw- 1,3 /dev/null +-crw- 2,2 /dev/ptyp2 +-crw- 2,3 /dev/ptyp3 +-crw- 2,5 /dev/ptyp5 +-crw- 2,4 /dev/ptyp4 +-crw- 10,178 /dev/triokb +-crw- 2,0 /dev/ptyp0 +-crw- 2,6 /dev/ptyp6 +-crw- 2,7 /dev/ptyp7 +-crw- 2,8 /dev/ptyp8 +-crw- 2,9 /dev/ptyp9 +-crw- 2,10 /dev/ptypa +-crw- 2,11 /dev/ptypb +-crw- 2,12 /dev/ptypc +-crw- 2,13 /dev/ptypd +-crw- 2,14 /dev/ptype +-crw- 2,15 /dev/ptypf +-brw- 1,0 /dev/ram0 +-brw- 1,1 /dev/ram1 +-brw- 1,2 /dev/ram2 +-brw- 1,3 /dev/ram3 +-br-- 31,0 /dev/rom0 +-brw- 31,1 /dev/rom1 +-brw- 31,2 /dev/rom2 +-brw- 31,3 /dev/rom3 +-crw- 5,0 /dev/tty +-crw- 4,0 /dev/tty0 +-crwx 4,1 /dev/tty1 +-crwx 4,2 /dev/tty2 +-crwx 4,3 /dev/tty3 +-crwx 4,4 /dev/tty4 +-crw- 4,5 /dev/tty5 +-crwx 4,6 /dev/tty6 +-crw- 4,7 /dev/tty7 +-crw- 4,8 /dev/tty8 +-crw- 4,9 /dev/tty9 +-crw- 4,64 /dev/ttyS0 +-crw- 4,65 /dev/ttyS1 +-crw- 4,66 /dev/ttyS2 +-crw- 4,67 /dev/ttyS3 +-crw- 4,68 /dev/ttyS4 +-crw- 4,69 /dev/ttyS5 +-crw- 4,70 /dev/ttyS6 +-crw- 4,71 /dev/ttyS7 +-crw- 4,72 /dev/ttyS8 +-crw- 4,73 /dev/ttyS9 +-crw- 3,0 /dev/ttyp0 +-crw- 3,1 /dev/ttyp1 +-crw- 3,2 /dev/ttyp2 +-crw- 3,3 /dev/ttyp3 +-crw- 3,4 /dev/ttyp4 +-crw- 3,5 /dev/ttyp5 +-crw- 3,6 /dev/ttyp6 +-crw- 3,7 /dev/ttyp7 +-crw- 3,8 /dev/ttyp8 +-crw- 3,9 /dev/ttyp9 +-crw- 3,10 /dev/ttypa +-crw- 3,11 /dev/ttypb +-crw- 3,12 /dev/ttypc +-crw- 3,13 /dev/ttypd +-crw- 3,14 /dev/ttype +-crw- 3,15 /dev/ttypf +-crw- 1,5 /dev/zero +-crwx 10,111 /dev/dtedrv +-crwx 4,110 /dev/ttyM +-crw- 77,1 /dev/tssnd +-crw- 77,2 /dev/tstone +-crw- 2,1 /dev/ptyp1 +-crwx 10,180 /dev/triohook +-crw- 90,0 /dev/mtd0 +-brw- 44,0 /dev/ftl0 +-crw- 10,175 /dev/tporta +-crw- 10,176 /dev/tportb +-crwx 10,100 /dev/softmodem +-crwx 10,101 /dev/softmodem_signals +-crwx 10,181 /dev/triovoice +-crw- 5,67 /dev/cua3 +-crw- 5,68 /dev/cua4 +-crw- 5,69 /dev/cua5 +diff -urN genext2fs-1.3.orig/device_table.txt genext2fs-1.3/device_table.txt +--- genext2fs-1.3.orig/device_table.txt 1969-12-31 17:00:00.000000000 -0700 ++++ genext2fs-1.3/device_table.txt 2003-04-21 01:41:42.000000000 -0600 +@@ -0,0 +1,129 @@ ++# When building a target filesystem, it is desirable to not have to ++# become root and then run 'mknod' a thousand times. Using a device ++# table you can create device nodes and directories "on the fly". ++# ++# This is a sample device table file for use with genext2fs. You can ++# do all sorts of interesting things with a device table file. For ++# example, if you want to adjust the permissions on a particular file ++# you can just add an entry like: ++# /sbin/foobar f 2755 0 0 - - - - - ++# and (assuming the file /sbin/foobar exists) it will be made setuid ++# root (regardless of what its permissions are on the host filesystem. ++# Furthermore, you can use a single table entry to create a many device ++# minors. For example, if I wanted to create /dev/hda and /dev/hda[0-15] ++# I could just use the following two table entries: ++# /dev/hda b 640 0 0 3 0 0 0 - ++# /dev/hda b 640 0 0 3 1 1 1 15 ++# ++# Device table entries take the form of: ++# <name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count> ++# where name is the file name, type can be one of: ++# f A regular file ++# d Directory ++# c Character special device file ++# b Block special device file ++# p Fifo (named pipe) ++# uid is the user id for the target file, gid is the group id for the ++# target file. The rest of the entries (major, minor, etc) apply only ++# to device special files. ++ ++# Have fun ++# -Erik Andersen <andersen@codepoet.org> ++# ++ ++#<name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count> ++/dev d 755 0 0 - - - - - ++/dev/mem c 640 0 0 1 1 0 0 - ++/dev/kmem c 640 0 0 1 2 0 0 - ++/dev/null c 640 0 0 1 3 0 0 - ++/dev/zero c 640 0 0 1 5 0 0 - ++/dev/random c 640 0 0 1 8 0 0 - ++/dev/urandom c 640 0 0 1 9 0 0 - ++/dev/tty c 666 0 0 5 0 0 0 - ++/dev/tty c 666 0 0 4 0 0 1 6 ++/dev/console c 640 0 0 5 1 0 0 - ++/dev/ram b 640 0 0 1 1 0 0 - ++/dev/ram b 640 0 0 1 0 0 1 4 ++/dev/loop b 640 0 0 7 0 0 1 2 ++/dev/ptmx c 666 0 0 5 2 0 0 - ++#/dev/ttyS c 640 0 0 4 64 0 1 4 ++#/dev/psaux c 640 0 0 10 1 0 0 - ++#/dev/rtc c 640 0 0 10 135 0 0 - ++ ++# Adjust permissions on some normal files ++#/etc/shadow f 600 0 0 - - - - - ++#/bin/tinylogin f 4755 0 0 - - - - - ++ ++# User-mode Linux stuff ++/dev/ubda b 640 0 0 98 0 0 0 - ++/dev/ubda b 640 0 0 98 1 1 1 15 ++ ++# IDE Devices ++/dev/hda b 640 0 0 3 0 0 0 - ++/dev/hda b 640 0 0 3 1 1 1 15 ++/dev/hdb b 640 0 0 3 64 0 0 - ++/dev/hdb b 640 0 0 3 65 1 1 15 ++#/dev/hdc b 640 0 0 22 0 0 0 - ++#/dev/hdc b 640 0 0 22 1 1 1 15 ++#/dev/hdd b 640 0 0 22 64 0 0 - ++#/dev/hdd b 640 0 0 22 65 1 1 15 ++#/dev/hde b 640 0 0 33 0 0 0 - ++#/dev/hde b 640 0 0 33 1 1 1 15 ++#/dev/hdf b 640 0 0 33 64 0 0 - ++#/dev/hdf b 640 0 0 33 65 1 1 15 ++#/dev/hdg b 640 0 0 34 0 0 0 - ++#/dev/hdg b 640 0 0 34 1 1 1 15 ++#/dev/hdh b 640 0 0 34 64 0 0 - ++#/dev/hdh b 640 0 0 34 65 1 1 15 ++ ++# SCSI Devices ++#/dev/sda b 640 0 0 8 0 0 0 - ++#/dev/sda b 640 0 0 8 1 1 1 15 ++#/dev/sdb b 640 0 0 8 16 0 0 - ++#/dev/sdb b 640 0 0 8 17 1 1 15 ++#/dev/sdc b 640 0 0 8 32 0 0 - ++#/dev/sdc b 640 0 0 8 33 1 1 15 ++#/dev/sdd b 640 0 0 8 48 0 0 - ++#/dev/sdd b 640 0 0 8 49 1 1 15 ++#/dev/sde b 640 0 0 8 64 0 0 - ++#/dev/sde b 640 0 0 8 65 1 1 15 ++#/dev/sdf b 640 0 0 8 80 0 0 - ++#/dev/sdf b 640 0 0 8 81 1 1 15 ++#/dev/sdg b 640 0 0 8 96 0 0 - ++#/dev/sdg b 640 0 0 8 97 1 1 15 ++#/dev/sdh b 640 0 0 8 112 0 0 - ++#/dev/sdh b 640 0 0 8 113 1 1 15 ++#/dev/sg c 640 0 0 21 0 0 1 15 ++#/dev/scd b 640 0 0 11 0 0 1 15 ++#/dev/st c 640 0 0 9 0 0 1 8 ++#/dev/nst c 640 0 0 9 128 0 1 8 ++#/dev/st c 640 0 0 9 32 1 1 4 ++#/dev/st c 640 0 0 9 64 1 1 4 ++#/dev/st c 640 0 0 9 96 1 1 4 ++ ++# Floppy disk devices ++#/dev/fd b 640 0 0 2 0 0 1 2 ++#/dev/fd0d360 b 640 0 0 2 4 0 0 - ++#/dev/fd1d360 b 640 0 0 2 5 0 0 - ++#/dev/fd0h1200 b 640 0 0 2 8 0 0 - ++#/dev/fd1h1200 b 640 0 0 2 9 0 0 - ++#/dev/fd0u1440 b 640 0 0 2 28 0 0 - ++#/dev/fd1u1440 b 640 0 0 2 29 0 0 - ++#/dev/fd0u2880 b 640 0 0 2 32 0 0 - ++#/dev/fd1u2880 b 640 0 0 2 33 0 0 - ++ ++# All the proprietary cdrom devices in the world ++#/dev/aztcd b 640 0 0 29 0 0 0 - ++#/dev/bpcd b 640 0 0 41 0 0 0 - ++#/dev/capi20 c 640 0 0 68 0 0 1 2 ++#/dev/cdu31a b 640 0 0 15 0 0 0 - ++#/dev/cdu535 b 640 0 0 24 0 0 0 - ++#/dev/cm206cd b 640 0 0 32 0 0 0 - ++#/dev/sjcd b 640 0 0 18 0 0 0 - ++#/dev/sonycd b 640 0 0 15 0 0 0 - ++#/dev/gscd b 640 0 0 16 0 0 0 - ++#/dev/sbpcd b 640 0 0 25 0 0 0 - ++#/dev/sbpcd b 640 0 0 25 0 0 1 4 ++#/dev/mcd b 640 0 0 23 0 0 0 - ++#/dev/optcd b 640 0 0 17 0 0 0 - ++ +diff -urN genext2fs-1.3.orig/genext2fs.8 genext2fs-1.3/genext2fs.8 +--- genext2fs-1.3.orig/genext2fs.8 1969-12-31 17:00:00.000000000 -0700 ++++ genext2fs-1.3/genext2fs.8 2003-04-21 01:41:42.000000000 -0600 +@@ -0,0 +1,125 @@ ++.\" Hey, EMACS: -*- nroff -*- ++.\" First parameter, NAME, should be all caps ++.\" Second parameter, SECTION, should be 1-8, maybe w/ subsection ++.\" other parameters are allowed: see man(7), man(1) ++.TH GENEXT2FS 8 "July 14, 2001" ++.\" Please adjust this date whenever revising the manpage. ++.\" ++.\" Some roff macros, for reference: ++.\" .nh disable hyphenation ++.\" .hy enable hyphenation ++.\" .ad l left justify ++.\" .ad b justify to both left and right margins ++.\" .nf disable filling ++.\" .fi enable filling ++.\" .br insert line break ++.\" .sp <n> insert n+1 empty lines ++.\" for manpage-specific macros, see man(7) ++.SH NAME ++genext2fs \- ext2 filesystem generator for embedded systems ++.SH SYNOPSIS ++.B genext2fs ++.RI [ options ] " image" ++.SH DESCRIPTION ++\fBgenext2fs\fP generates an ext2 filesystem ++as a normal (non-root) user. It doesn't require you to mount ++the image file to copy files on it. It doesn't even require ++you to be the superuser to make device nodes. ++.SH OPTIONS ++.TP ++.BI -x \ image ++Use this image as a starting point ++.TP ++.BI -d \ directory ++Add this directory as source ++.TP ++.BI -f \ FILE ++.TP ++.BI -D \ FILE ++Uses the named FILE as a device table file, to create device ++nodes and directories "on the fly". ++.TP ++.BI -b \ blocks ++Size in blocks ++.TP ++.BI -i \ inodes ++Number of inodes ++.TP ++.BI -r \ reserved ++Number of reserved blocks ++.TP ++.BI -g \ path ++Generate a block map file for this path ++.TP ++.BI -e \ value ++Fill unallocated blocks with value ++.TP ++.BI -z ++Make files with holes ++.TP ++.BI -U ++Squash owners making all files be owned by root ++.TP ++.BI -P ++Squash permissions on all files ++.TP ++.BI -q ++Squash permissions and owners (same as -P -U) ++.TP ++.BI -v ++Print resulting filesystem structure ++.TP ++.BI -h ++Display help ++.TP ++.SH EXAMPLES ++ ++.EX ++.B ++ genext2fs -b 1440 -d src /dev/fd0 ++.EE ++ ++All files in the ++.I src ++directory will be written to ++.B /dev/fd0 ++as a new ext2 filesystem image. You can then mount the floppy as ++usual. ++ ++.EX ++.B ++ genext2fs -b 1024 -d src -D device_table.txt flashdisk.img ++.EE ++ ++This example builds a filesystem from all the files in ++.I src ++, then device nodes are created based on the content the device_table file ++.I dev.txt. ++An example device file follows: ++ ++.EX ++ #<name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count> ++ /dev d 755 0 0 - - - - - ++ /dev/mem c 640 0 0 1 1 0 0 - ++ /dev/tty c 666 0 0 5 0 0 0 - ++ /dev/tty c 666 0 0 4 0 0 1 6 ++ /dev/loop b 640 0 0 7 0 0 1 2 ++ /dev/hda b 640 0 0 3 0 0 0 - ++ /dev/hda b 640 0 0 3 1 1 1 16 ++.EE ++ ++This device table creates the /dev directory, a character device ++node /dev/mem (major 1, minor 1), it also creates /dev/tty, ++/dev/tty[0-5], /dev/loop[0-1], /dev/hda, and /dev/hda0 to /dev/hda15 ++.SH BUGS ++\fBgenext2fs\fP does not support hard links. Hard links present in the input ++tree will be represented as separate files in the ext2 image. ++ ++.SH SEE ALSO ++.BR mkfs (8), ++.BR genromfs (8), ++.BR mkisofs (8). ++.br ++.SH AUTHOR ++This manual page was written by David Kimdon <dwhedon@debian.org>, ++for the Debian GNU/Linux system (but may be used by others). +diff -urN genext2fs-1.3.orig/genext2fs.c genext2fs-1.3/genext2fs.c +--- genext2fs-1.3.orig/genext2fs.c 2001-06-18 02:11:32.000000000 -0600 ++++ genext2fs-1.3/genext2fs.c 2003-04-21 01:48:35.000000000 -0600 +@@ -1,3 +1,4 @@ ++/* vi: set sw=8 ts=8: */ + // genext2fs.c + // + // ext2 filesystem generator for embedded systems +@@ -26,6 +27,22 @@ + // Bugfix: getcwd values for Solaris xavier.gueguen@col.bsf.alcatel.fr + // Bugfix: ANSI scanf for non-GNU C xavier.gueguen@col.bsf.alcatel.fr + // 28 Jun 2001 Bugfix: getcwd differs for Solaris/GNU mike@sowbug.com ++// 23 Mar 2002 Bugfix: test for IFCHR or IFBLK was flawed ++// 10 Oct 2002 Added comments,makefile targets, vsundar@ixiacom.com ++// endianess swap assert check. ++// Copyright (C) 2002 Ixia communications ++// 12 Oct 2002 Added support for triple indirection vsundar@ixiacom.com ++// Copyright (C) 2002 Ixia communications ++// 14 Oct 2002 Added support for groups vsundar@ixiacom.com ++// Copyright (C) 2002 Ixia communications ++// 5 Jan 2003 Bugfixes: reserved inodes should be set vsundar@usc.edu ++// only in the first group; directory names ++// need to be null padded at the end; and ++// number of blocks per group should be a ++// multiple of 8. Updated md5 values. ++// 6 Jan 2003 Erik Andersen <andersee@debian.org> added ++// mkfs.jffs2 compatible device table support, ++// along with -q, -P, -U + + + // `genext2fs' is a mean to generate an ext2 filesystem +@@ -33,10 +50,6 @@ + // the image file to copy files on it. It doesn't even require + // you to be the superuser to make device nodes. + // +-// Warning ! `genext2fs' has been designed for embedded +-// systems. As such, it will generate a filesystem for single-user +-// usage: all files/directories/etc... will belong to UID/GID 0 +-// + // Example usage: + // + // # genext2fs -b 1440 -d srcdir /dev/fd0 +@@ -45,21 +58,15 @@ + // a new ext2 filesystem image. You can then mount the floppy as + // usual. + // +-// # genext2fs -b 1024 -d builddir -f devices.txt flashdisk.img ++// # genext2fs -b 1024 -d builddir -D device_table.txt flashdisk.img + // + // This one would build a filesystem from all the files in builddir, +-// then would read a devices list and make apropriate nodes. The +-// format for the device list is: +-// +-// drwx /dev +-// crw- 10,190 /dev/lcd +-// brw- 1,0 /dev/ram0 +-// +-// This device list builds the /dev directory, a character device +-// node /dev/lcd (major 10, minor 190) and a block device node +-// /dev/ram0 (major 1, minor 0) ++// then would read the device_table.txt file and make apropriate nodes. ++// The format for the device table file is covered in detail in the sample ++// device_table.txt file provided with the genext2fs source. + + ++#define _GNU_SOURCE + #include <stdio.h> + #include <stdlib.h> + #include <string.h> +@@ -67,6 +74,11 @@ + #include <stdarg.h> + #include <unistd.h> + #include <sys/stat.h> ++#include <assert.h> ++#include <time.h> ++#include <ctype.h> ++#include <errno.h> ++#include <fcntl.h> + + + +@@ -76,10 +88,14 @@ + #define BLOCKSIZE 1024 + #define BLOCKS_PER_GROUP 8192 + #define BYTES_PER_INODE (8*BLOCKSIZE) ++/* Percentage of blocks that are reserved.*/ + #define RESERVED_INODES 5/100 + + + // inode block size (why is it != BLOCKSIZE ?!?) ++/* The field i_blocks in the ext2 inode stores the number of data blocks ++ but in terms of 512 bytes. That is what INODE_BLOCKSIZE represents. ++ INOBLK is the number of such blocks in an actual disk block */ + + #define INODE_BLOCKSIZE 512 + #define INOBLK (BLOCKSIZE / INODE_BLOCKSIZE) +@@ -147,6 +163,39 @@ + + #define OP_HOLES 0x01 // make files with holes + ++/* Defines for accessing group details */ ++ ++// Number of groups in the filesystem ++#define GRP_NBGROUPS(fs) ( ((fs)->sb.s_blocks_count-1)/(fs)->sb.s_blocks_per_group ) ++ ++// Get group block bitmap (bbm) given the group number ++#define GRP_GET_GROUP_BBM(fs,grp) ( get_blk((fs),(fs)->gd[(grp)].bg_block_bitmap) ) ++ ++// Get group inode bitmap (ibm) given the group number ++#define GRP_GET_GROUP_IBM(fs,grp) ( get_blk((fs),(fs)->gd[(grp)].bg_inode_bitmap) ) ++ ++// Given an inode number find the group it belongs to ++#define GRP_GROUP_OF_INODE(fs,nod) ( ((nod)-1) / (fs)->sb.s_inodes_per_group) ++ ++//Given an inode number get the inode bitmap that covers it ++#define GRP_GET_INODE_BITMAP(fs,nod) \ ++ ( GRP_GET_GROUP_IBM((fs),GRP_GROUP_OF_INODE((fs),(nod))) ) ++ ++//Given an inode number find its offset within the inode bitmap that covers it ++#define GRP_IBM_OFFSET(fs,nod) \ ++ ( (nod) - GRP_GROUP_OF_INODE((fs),(nod))*(fs)->sb.s_inodes_per_group ) ++ ++// Given a block number find the group it belongs to ++#define GRP_GROUP_OF_BLOCK(fs,blk) ( ((blk)-1) / (fs)->sb.s_blocks_per_group) ++ ++//Given a block number get the block bitmap that covers it ++#define GRP_GET_BLOCK_BITMAP(fs,blk) \ ++ ( GRP_GET_GROUP_BBM((fs),GRP_GROUP_OF_BLOCK((fs),(blk))) ) ++ ++//Given a block number find its offset within the block bitmap that covers it ++#define GRP_BBM_OFFSET(fs,blk) \ ++ ( (blk) - GRP_GROUP_OF_BLOCK((fs),(blk))*(fs)->sb.s_blocks_per_group ) ++ + + // used types + +@@ -287,7 +336,6 @@ + { + groupdescriptor_decl + uint32 bg_reserved[3]; +- uint32 bg_pad_to_bk[(BLOCKSIZE-32)/sizeof(uint32)]; + } groupdescriptor; + + typedef struct +@@ -304,6 +352,32 @@ + + typedef uint8 block[BLOCKSIZE]; + ++/* blockwalker fields: ++ The blockwalker is used to access all the blocks of a file (including ++ the indirection blocks) through repeated calls to walk_bw. ++ ++ bpdir -> index into the inode->i_block[]. Indicates level of indirection. ++ bnum -> total number of blocks so far accessed. including indirection ++ blocks. ++ bpind,bpdind,bptind -> index into indirection blocks. ++ ++ bpind, bpdind, bptind do *NOT* index into single, double and triple ++ indirect blocks resp. as you might expect from their names. Instead ++ they are in order the 1st, 2nd & 3rd index to be used ++ ++ As an example.. ++ To access data block number 70000: ++ bpdir: 15 (we are doing triple indirection) ++ bpind: 0 ( index into the triple indirection block) ++ bpdind: 16 ( index into the double indirection block) ++ bptind: 99 ( index into the single indirection block) ++ 70000 = 12 + 256 + 256*256 + 16*256 + 100 (indexing starts from zero) ++ ++ So,for double indirection bpind will index into the double indirection ++ block and bpdind into the single indirection block. For single indirection ++ only bpind will be used. ++*/ ++ + typedef struct + { + uint32 bnum; +@@ -313,15 +387,14 @@ + uint32 bptind; + } blockwalker; + ++ ++/* Filesystem structure that support groups */ + #if BLOCKSIZE == 1024 + typedef struct + { + block zero; // The famous block 0 + superblock sb; // The superblock +- groupdescriptor gd; // The group desciptor +- block bbm; // The block bitmap +- block ibm; // The inode bitmap +- inode itab[0]; // The inode table ++ groupdescriptor gd[0]; // The group descriptors + } filesystem; + #else + #error UNHANDLED BLOCKSIZE +@@ -389,25 +462,113 @@ + #undef udecl32 + #undef utdecl32 + +-char * argv0; ++static char * app_name; ++static int squash_uids = 0; ++static int squash_perms = 0; ++static const char *const memory_exhausted = "memory exhausted"; + + // error (un)handling +-inline void errexit(const char *fmt, ...) ++static void verror_msg(const char *s, va_list p) + { +- va_list ap; +- fprintf(stderr, "%s: ", argv0); +- va_start(ap, fmt); +- vfprintf(stderr, fmt, ap); +- va_end(ap); +- fprintf(stderr, "\n"); +- exit(1); ++ fflush(stdout); ++ fprintf(stderr, "%s: ", app_name); ++ vfprintf(stderr, s, p); ++} ++static void error_msg(const char *s, ...) ++{ ++ va_list p; ++ va_start(p, s); ++ verror_msg(s, p); ++ va_end(p); ++ putc('\n', stderr); ++} ++ ++static void error_msg_and_die(const char *s, ...) ++{ ++ va_list p; ++ va_start(p, s); ++ verror_msg(s, p); ++ va_end(p); ++ putc('\n', stderr); ++ exit(EXIT_FAILURE); ++} ++ ++static void vperror_msg(const char *s, va_list p) ++{ ++ int err = errno; ++ if (s == 0) ++ s = ""; ++ verror_msg(s, p); ++ if (*s) ++ s = ": "; ++ fprintf(stderr, "%s%s\n", s, strerror(err)); ++} ++ ++#if 0 ++static void perror_msg(const char *s, ...) ++{ ++ va_list p; ++ va_start(p, s); ++ vperror_msg(s, p); ++ va_end(p); ++} ++#endif ++static void perror_msg_and_die(const char *s, ...) ++{ ++ va_list p; ++ va_start(p, s); ++ vperror_msg(s, p); ++ va_end(p); ++ exit(EXIT_FAILURE); + } + +-inline void pexit(const char * fname) ++static FILE *xfopen(const char *path, const char *mode) + { +- fprintf(stderr, "%s: ", argv0); +- perror(fname); +- exit(1); ++ FILE *fp; ++ if ((fp = fopen(path, mode)) == NULL) ++ perror_msg_and_die("%s", path); ++ return fp; ++} ++ ++static char *xstrdup(const char *s) ++{ ++ char *t; ++ ++ if (s == NULL) ++ return NULL; ++ t = strdup(s); ++ if (t == NULL) ++ error_msg_and_die(memory_exhausted); ++ return t; ++} ++ ++extern void *xrealloc(void *ptr, size_t size) ++{ ++ ptr = realloc(ptr, size); ++ if (ptr == NULL && size != 0) ++ error_msg_and_die(memory_exhausted); ++ return ptr; ++} ++ ++static char *xreadlink(const char *path) ++{ ++ static const int GROWBY = 80; /* how large we will grow strings by */ ++ ++ char *buf = NULL; ++ int bufsize = 0, readsize = 0; ++ ++ do { ++ buf = xrealloc(buf, bufsize += GROWBY); ++ readsize = readlink(path, buf, bufsize); /* 1st try */ ++ if (readsize == -1) { ++ perror_msg_and_die("%s:%s", app_name, path); ++ } ++ } ++ while (bufsize < readsize + 1); ++ ++ buf[readsize] = '\0'; ++ ++ return buf; + } + + // printf helper macro +@@ -423,7 +584,7 @@ + { + } + +-// rounds a quantity up to a blocksize ++/* Rounds qty upto a multiple of siz. siz should be a power of 2 */ + uint32 rndup(uint32 qty, uint32 siz) + { + return (qty + (siz - 1)) & ~(siz - 1); +@@ -444,7 +605,13 @@ + // return a given inode from a filesystem + inline inode * get_nod(filesystem *fs, uint32 nod) + { +- return &fs->itab[nod-1]; ++ int grp,offset; ++ inode *itab; ++ ++ offset = GRP_IBM_OFFSET(fs,nod); ++ grp = GRP_GROUP_OF_INODE(fs,nod); ++ itab = (inode *)get_blk(fs, fs->gd[grp].bg_inode_table); ++ return itab+offset-1; + } + + // allocate a given block/inode in the bitmap +@@ -479,29 +646,57 @@ + } + + // allocate a block +-uint32 alloc_blk(filesystem *fs) ++uint32 alloc_blk(filesystem *fs, uint32 nod) + { +- uint32 bk; +- if(!(bk = allocate(fs->bbm, 0))) +- errexit("couldn't allocate a block (no free space)"); +- if(!(fs->gd.bg_free_blocks_count--)) +- errexit("group descr. free blocks count == 0 (corrupted fs?)"); ++ uint32 bk=0; ++ uint32 grp,nbgroups; ++ ++ grp = nod/fs->sb.s_inodes_per_group; ++ nbgroups = ( fs->sb.s_blocks_count - fs->sb.s_first_data_block + fs->sb.s_blocks_per_group -1 ) / ++ fs->sb.s_blocks_per_group; ++ if(!(bk = allocate(get_blk(fs,fs->gd[grp].bg_block_bitmap), 0))) { ++ for(grp=0;grp<nbgroups && !bk;grp++) ++ bk=allocate(get_blk(fs,fs->gd[grp].bg_block_bitmap),0); ++ grp--; ++ } ++ if (!bk) ++ error_msg_and_die("couldn't allocate a block (no free space)"); ++ if(!(fs->gd[grp].bg_free_blocks_count--)) ++ error_msg_and_die("group descr %d. free blocks count == 0 (corrupted fs?)",grp); + if(!(fs->sb.s_free_blocks_count--)) +- errexit("superblock free blocks count == 0 (corrupted fs?)"); +- return bk; ++ error_msg_and_die("superblock free blocks count == 0 (corrupted fs?)"); ++ return fs->sb.s_blocks_per_group*grp + bk; + } + + // allocate an inode + uint32 alloc_nod(filesystem *fs) + { +- uint32 nod; +- if(!(nod = allocate(fs->ibm, 0))) +- errexit("couldn't allocate an inode (no free inode)"); +- if(!(fs->gd.bg_free_inodes_count--)) +- errexit("group descr. free blocks count == 0 (corrupted fs?)"); ++ uint32 nod=0,best_group=0; ++ uint32 grp,nbgroups,avefreei; ++ ++ nbgroups = ( fs->sb.s_blocks_count - fs->sb.s_first_data_block + fs->sb.s_blocks_per_group -1 ) / ++ fs->sb.s_blocks_per_group; ++ ++ /* Distribute inodes amongst all the blocks */ ++ /* For every block group with more than average number of free inodes */ ++ /* find the one with the most free blocks and allocate node there */ ++ /* Idea from find_group_dir in fs/ext2/ialloc.c in 2.4.19 kernel */ ++ /* We do it for all inodes. */ ++ avefreei = fs->sb.s_free_inodes_count / nbgroups; ++ for(grp=0;grp<nbgroups && !nod;grp++) { ++ if (fs->gd[grp].bg_free_inodes_count < avefreei) ++ continue; ++ if (!best_group || ++ fs->gd[grp].bg_free_blocks_count > fs->gd[best_group].bg_free_blocks_count) ++ best_group = grp; ++ } ++ if (!(nod = allocate(get_blk(fs,fs->gd[best_group].bg_inode_bitmap),0))) ++ error_msg_and_die("couldn't allocate an inode (no free inode)"); ++ if(!(fs->gd[best_group].bg_free_inodes_count--)) ++ error_msg_and_die("group descr. free blocks count == 0 (corrupted fs?)"); + if(!(fs->sb.s_free_inodes_count--)) +- errexit("superblock free blocks count == 0 (corrupted fs?)"); +- return nod; ++ error_msg_and_die("superblock free blocks count == 0 (corrupted fs?)"); ++ return fs->sb.s_inodes_per_group*best_group+nod; + } + + // print a bitmap allocation +@@ -546,14 +741,14 @@ + { + bkref = &get_nod(fs, nod)->i_block[bw->bpdir = 0]; + if(extend) // allocate first block +- *bkref = hole ? 0 : alloc_blk(fs); ++ *bkref = hole ? 0 : alloc_blk(fs,nod); + } + // direct block + else if(bw->bpdir < EXT2_NDIR_BLOCKS) + { + bkref = &get_nod(fs, nod)->i_block[++bw->bpdir]; + if(extend) // allocate block +- *bkref = hole ? 0 : alloc_blk(fs); ++ *bkref = hole ? 0 : alloc_blk(fs,nod); + } + // first block in indirect block + else if(bw->bpdir == EXT2_NDIR_BLOCKS) +@@ -562,11 +757,11 @@ + bw->bpdir = EXT2_IND_BLOCK; + bw->bpind = 0; + if(extend) // allocate indirect block +- get_nod(fs, nod)->i_block[bw->bpdir] = alloc_blk(fs); ++ get_nod(fs, nod)->i_block[bw->bpdir] = alloc_blk(fs,nod); + b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); + bkref = &b[bw->bpind]; + if(extend) // allocate first block +- *bkref = hole ? 0 : alloc_blk(fs); ++ *bkref = hole ? 0 : alloc_blk(fs,nod); + } + // block in indirect block + else if((bw->bpdir == EXT2_IND_BLOCK) && (bw->bpind < BLOCKSIZE/4 - 1)) +@@ -575,7 +770,7 @@ + b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); + bkref = &b[bw->bpind]; + if(extend) // allocate block +- *bkref = hole ? 0 : alloc_blk(fs); ++ *bkref = hole ? 0 : alloc_blk(fs,nod); + } + // first block in first indirect block in first double indirect block + else if(bw->bpdir == EXT2_IND_BLOCK) +@@ -585,14 +780,14 @@ + bw->bpind = 0; + bw->bpdind = 0; + if(extend) // allocate double indirect block +- get_nod(fs, nod)->i_block[bw->bpdir] = alloc_blk(fs); ++ get_nod(fs, nod)->i_block[bw->bpdir] = alloc_blk(fs,nod); + b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); + if(extend) // allocate first indirect block +- b[bw->bpind] = alloc_blk(fs); ++ b[bw->bpind] = alloc_blk(fs,nod); + b = (uint32*)get_blk(fs, b[bw->bpind]); + bkref = &b[bw->bpdind]; + if(extend) // allocate first block +- *bkref = hole ? 0 : alloc_blk(fs); ++ *bkref = hole ? 0 : alloc_blk(fs,nod); + } + // block in indirect block in double indirect block + else if((bw->bpdir == EXT2_DIND_BLOCK) && (bw->bpdind < BLOCKSIZE/4 - 1)) +@@ -602,7 +797,7 @@ + b = (uint32*)get_blk(fs, b[bw->bpind]); + bkref = &b[bw->bpdind]; + if(extend) // allocate block +- *bkref = hole ? 0 : alloc_blk(fs); ++ *bkref = hole ? 0 : alloc_blk(fs,nod); + } + // first block in indirect block in double indirect block + else if((bw->bpdir == EXT2_DIND_BLOCK) && (bw->bpind < BLOCKSIZE/4 - 1)) +@@ -612,20 +807,100 @@ + bw->bpind++; + b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); + if(extend) // allocate indirect block +- b[bw->bpind] = alloc_blk(fs); ++ b[bw->bpind] = alloc_blk(fs,nod); + b = (uint32*)get_blk(fs, b[bw->bpind]); + bkref = &b[bw->bpdind]; + if(extend) // allocate first block +- *bkref = hole ? 0 : alloc_blk(fs); ++ *bkref = hole ? 0 : alloc_blk(fs,nod); ++ } ++ ++ /* Adding support for triple indirection */ ++ /* Just starting triple indirection. Allocate the indirection ++ blocks and the first data block ++ */ ++ else if (bw->bpdir == EXT2_DIND_BLOCK) ++ { ++ bw->bnum += 3; ++ bw->bpdir = EXT2_TIND_BLOCK; ++ bw->bpind = 0; ++ bw->bpdind = 0; ++ bw->bptind = 0; ++ if(extend) // allocate triple indirect block ++ get_nod(fs, nod)->i_block[bw->bpdir] = alloc_blk(fs,nod); ++ b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); ++ if(extend) // allocate first double indirect block ++ b[bw->bpind] = alloc_blk(fs,nod); ++ b = (uint32*)get_blk(fs, b[bw->bpind]); ++ if(extend) // allocate first indirect block ++ b[bw->bpdind] = alloc_blk(fs,nod); ++ b = (uint32*)get_blk(fs, b[bw->bpdind]); ++ bkref = &b[bw->bptind]; ++ if(extend) // allocate first data block ++ *bkref = hole ? 0 : alloc_blk(fs,nod); ++ } ++ /* Still processing a single indirect block down the indirection ++ chain.Allocate a data block for it ++ */ ++ else if ( (bw->bpdir == EXT2_TIND_BLOCK) && ++ (bw->bptind < BLOCKSIZE/4 -1) ) ++ { ++ bw->bptind++; ++ b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); ++ b = (uint32*)get_blk(fs, b[bw->bpind]); ++ b = (uint32*)get_blk(fs, b[bw->bpdind]); ++ bkref = &b[bw->bptind]; ++ if(extend) // allocate data block ++ *bkref = hole ? 0 : alloc_blk(fs,nod); ++ } ++ /* Finished processing a single indirect block. But still in the ++ same double indirect block. Allocate new single indirect block ++ for it and a data block ++ */ ++ else if ( (bw->bpdir == EXT2_TIND_BLOCK) && ++ (bw->bpdind < BLOCKSIZE/4 -1) ) ++ { ++ bw->bnum++; ++ bw->bptind = 0; ++ bw->bpdind++; ++ b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); ++ b = (uint32*)get_blk(fs, b[bw->bpind]); ++ if (extend) // allocate single indirect block ++ b[bw->bpdind] = alloc_blk(fs,nod); ++ b = (uint32*)get_blk(fs, b[bw->bpdind]); ++ bkref = &b[bw->bptind]; ++ if(extend) // allocate first data block ++ *bkref = hole ? 0 : alloc_blk(fs,nod); ++ } ++ /* Finished processing a double indirect block. Allocate the next ++ double indirect block and the single,data blocks for it ++ */ ++ else if ( (bw->bpdir == EXT2_TIND_BLOCK) && ++ (bw->bpind < BLOCKSIZE/4 - 1) ) ++ { ++ bw->bnum += 2; ++ bw->bpdind = 0; ++ bw->bptind = 0; ++ bw->bpind++; ++ b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); ++ if(extend) // allocate double indirect block ++ b[bw->bpind] = alloc_blk(fs,nod); ++ b = (uint32*)get_blk(fs, b[bw->bpind]); ++ if(extend) // allocate single indirect block ++ b[bw->bpdind] = alloc_blk(fs,nod); ++ b = (uint32*)get_blk(fs, b[bw->bpdind]); ++ bkref = &b[bw->bptind]; ++ if(extend) // allocate first block ++ *bkref = hole ? 0 : alloc_blk(fs,nod); + } +- // I don't do triple indirect - it's such a small filesystem ... + else +- errexit("file too big ! blocks list for inode %d extends past double indirect blocks!", nod); ++ error_msg_and_die("file too big !"); ++ /* End change for walking triple indirection */ ++ + if(*bkref) + { + bw->bnum++; +- if(!allocated(fs->bbm, *bkref)) +- errexit("[block %d of inode %d is unallocated !]", *bkref, nod); ++ if(!allocated(GRP_GET_BLOCK_BITMAP(fs,*bkref), GRP_BBM_OFFSET(fs,*bkref))) ++ error_msg_and_die("[block %d of inode %d is unallocated !]", *bkref, nod); + } + if(extend) + get_nod(fs, nod)->i_blocks = bw->bnum * INOBLK; +@@ -663,23 +938,40 @@ + } + + // link an entry (inode #) to a directory +-void add2dir(filesystem *fs, uint32 dnod, uint32 nod, const char* name) ++void add2dir(filesystem *fs, uint32 dnod, uint32 nod, const char* name, uint32 mode, uid_t uid, gid_t gid, time_t ctime) + { + blockwalker bw; + uint32 bk; + uint8 *b; + directory *d; + int reclen, nlen; +- if((get_nod(fs, dnod)->i_mode & FM_IFMT) != FM_IFDIR) +- errexit("can't add '%s' to a non-directory", name); ++ inode *node; ++ inode *pnode; ++ ++ /* Squash all permissions so files are owned by root ++ * and file permissions have group/other perms removed */ ++ if (squash_uids) { ++ uid = gid = 0; ++ } ++ if (squash_perms) { ++ if (!S_ISLNK(mode)) { ++ mode &= ~(S_IWGRP | S_IWOTH); ++ mode &= ~(S_ISUID | S_ISGID); ++ } ++ } ++ ++ pnode = get_nod(fs, dnod); ++ ++ if(!S_ISDIR(pnode->i_mode)) ++ error_msg_and_die("can't add '%s' to a non-directory", name); + if(!*name) +- errexit("bad name '%s' (not meaningful)", name); ++ error_msg_and_die("bad name '%s' (not meaningful)", name); + if(strchr(name, '/')) +- errexit("bad name '%s' (contains a slash)", name); ++ error_msg_and_die("bad name '%s' (contains a slash)", name); + nlen = strlen(name); + reclen = sizeof(directory) + rndup(nlen, 4); + if(reclen > BLOCKSIZE) +- errexit("bad name '%s' (too long)", name); ++ error_msg_and_die("bad name '%s' (too long)", name); + init_bw(fs, dnod, &bw); + while((bk = walk_bw(fs, dnod, &bw, 0, 0)) != WALK_END) // for all blocks in dir + { +@@ -691,9 +983,16 @@ + if((!d->d_inode) && (d->d_rec_len >= reclen)) + { + d->d_inode = nod; +- get_nod(fs, nod)->i_links_count++; ++ node = get_nod(fs, nod); ++ node->i_links_count++; + d->d_name_len = nlen; +- strncpy(d->d_name, name, nlen); ++ strncpy(d->d_name, name, rndup(nlen,4)); ++ node->i_mode = mode; ++ node->i_uid = uid; ++ node->i_gid = gid; ++ node->i_atime = ctime; ++ node->i_ctime = ctime; ++ node->i_mtime = ctime; + return; + } + // if entry with enough room (last one?), shrink it & use it +@@ -705,9 +1004,16 @@ + d = (directory*) (((int8*)d) + d->d_rec_len); + d->d_rec_len = reclen; + d->d_inode = nod; +- get_nod(fs, nod)->i_links_count++; ++ node = get_nod(fs, nod); ++ node->i_links_count++; + d->d_name_len = nlen; +- strncpy(d->d_name, name, nlen); ++ strncpy(d->d_name, name, rndup(nlen,4)); ++ node->i_mode = mode; ++ node->i_uid = uid; ++ node->i_gid = gid; ++ node->i_atime = ctime; ++ node->i_ctime = ctime; ++ node->i_mtime = ctime; + return; + } + } +@@ -716,10 +1022,17 @@ + b = get_workblk(); + d = (directory*)b; + d->d_inode = nod; +- get_nod(fs, nod)->i_links_count++; ++ node = get_nod(fs, nod); ++ node->i_links_count++; + d->d_rec_len = BLOCKSIZE; + d->d_name_len = nlen; +- strncpy(d->d_name, name, nlen); ++ strncpy(d->d_name, name, rndup(nlen,4)); ++ node->i_mode = mode; ++ node->i_uid = uid; ++ node->i_gid = gid; ++ node->i_atime = ctime; ++ node->i_ctime = ctime; ++ node->i_mtime = ctime; + extend_blk(fs, dnod, b, 1); + get_nod(fs, dnod)->i_size += BLOCKSIZE; + free_workblk(b); +@@ -747,7 +1060,7 @@ + // find the inode of a full path + uint32 find_path(filesystem *fs, uint32 nod, const char * name) + { +- char *p, *n, *n2 = strdup(name); ++ char *p, *n, *n2 = xstrdup(name); + n = n2; + while(*n == '/') + { +@@ -770,27 +1083,32 @@ + } + + // make a full-fledged directory (i.e. with "." & "..") +-uint32 mkdir_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode) ++uint32 mkdir_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, ++ uid_t uid, gid_t gid, time_t ctime) + { + uint32 nod; + if((nod = find_dir(fs, parent_nod, name))) + return nod; + nod = alloc_nod(fs); +- get_nod(fs, nod)->i_mode = FM_IFDIR | mode; +- add2dir(fs, parent_nod, nod, name); +- add2dir(fs, nod, nod, "."); +- add2dir(fs, nod, parent_nod, ".."); +- fs->gd.bg_used_dirs_count++; ++ if (!(mode & FM_IFDIR)) ++ mode |= FM_IFDIR; ++ add2dir(fs, parent_nod, nod, name, mode, uid, gid, ctime); ++ add2dir(fs, nod, nod, ".", mode, uid, gid, ctime); ++ add2dir(fs, nod, parent_nod, "..", mode, uid, gid, ctime); ++ fs->gd[GRP_GROUP_OF_INODE(fs,nod)].bg_used_dirs_count++; + return nod; + } + + // make a symlink +-uint32 mklink_fs(filesystem *fs, uint32 parent_nod, const char *name, size_t size, uint8 * b) ++uint32 mklink_fs(filesystem *fs, uint32 parent_nod, const char *name, size_t size, ++ uint8 * b, uid_t uid, gid_t gid, time_t ctime) + { ++ uint32 mode; + uint32 nod = alloc_nod(fs); ++ mode = FM_IFLNK | FM_IRWXU | FM_IRWXG | FM_IRWXO; + get_nod(fs, nod)->i_mode = FM_IFLNK | FM_IRWXU | FM_IRWXG | FM_IRWXO; + get_nod(fs, nod)->i_size = size; +- add2dir(fs, parent_nod, nod, name); ++ add2dir(fs, parent_nod, nod, name, mode, uid, gid, ctime); + if(size <= 4 * (EXT2_TIND_BLOCK+1)) + { + strncpy((char*)get_nod(fs, nod)->i_block, (char*)b, size); +@@ -801,15 +1119,15 @@ + } + + // make a file from a FILE* +-uint32 mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, size_t size, FILE *f) ++uint32 mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, size_t size, FILE *f, uid_t uid, gid_t gid, time_t ctime) + { + uint8 * b; + uint32 nod = alloc_nod(fs); +- get_nod(fs, nod)->i_mode = FM_IFREG | mode; ++ mode |= FM_IFREG; + get_nod(fs, nod)->i_size = size; +- add2dir(fs, parent_nod, nod, name); ++ add2dir(fs, parent_nod, nod, name, mode, uid, gid, ctime); + if(!(b = (uint8*)malloc(rndup(size, BLOCKSIZE)))) +- errexit("not enough mem to read file '%s'", name); ++ error_msg_and_die("not enough mem to read file '%s'", name); + memset(b, 0,rndup(size, BLOCKSIZE)); + if(f) + fread(b, size, 1, f); +@@ -824,6 +1142,15 @@ + uint32 get_mode(struct stat *st) + { + uint32 mode = 0; ++ ++ /* Squash file permissions as needed */ ++ if (squash_perms) { ++ if (!S_ISLNK(mode)) { ++ st->st_mode &= ~(S_IWGRP | S_IWOTH); ++ st->st_mode &= ~(S_ISUID | S_ISGID); ++ } ++ } ++ + if(st->st_mode & S_IRUSR) + mode |= FM_IRUSR | FM_IRGRP | FM_IROTH; + if(st->st_mode & S_IWUSR) +@@ -833,30 +1160,17 @@ + return mode; + } + +-// retrieves a mode info from a string +-uint32 get_modestr(const char *p) +-{ +- uint32 mode = 0; +- if(p[0] == 'r') +- mode |= FM_IRUSR | FM_IRGRP | FM_IROTH; +- if(p[1] == 'w') +- mode |= FM_IWUSR | FM_IWGRP | FM_IWOTH; +- if(p[2] == 'x' || p[2] == 's') +- mode |= FM_IXUSR | FM_IXGRP | FM_IXOTH; +- return mode; +-} +- + // basename of a path - free me + char * basename(const char * fullpath) + { + char * p = strrchr(fullpath, '/'); +- return strdup(p ? p + 1 : fullpath); ++ return xstrdup(p ? p + 1 : fullpath); + } + + // dirname of a path - free me + char * dirname(const char * fullpath) + { +- char * p, * n = strdup(fullpath); ++ char * p, * n = xstrdup(fullpath); + if((p = strrchr(n, '/'))) + *(p+1) = 0; + else +@@ -864,66 +1178,6 @@ + return n; + } + +-// adds entries to the filesystem from a text file +-void add2fs_from_file(filesystem *fs, uint32 this_nod, FILE * fh) +-{ +- uint32 mode; +- uint32 nod, nod2; +- char cmod[11], *path, *name, *dir; +- int major, minor; +- while(fscanf(fh, "%10s", cmod)) +- { +- if(feof(fh)) +- break; +- mode = get_modestr(cmod + 1); +- switch(*cmod) +- { +- case 'd': +- fscanf(fh, "%" SCANF_PREFIX "s\n", SCANF_STRING(path)); +- break; +- case 'c': +- mode |= FM_IFCHR; +- fscanf(fh, "%i, %i %" SCANF_PREFIX "s\n", &major, &minor, SCANF_STRING(path)); +- break; +- case 'b': +- mode |= FM_IFBLK; +- fscanf(fh, "%i, %i %" SCANF_PREFIX "s\n", &major, &minor, SCANF_STRING(path)); +- break; +- case '#': +- while(fgetc(fh) != '\n'); +- continue; +- default: +- errexit("malformed text input file"); +- } +- name = basename(path); +- dir = dirname(path); +- free(path); +- if(!(nod = find_path(fs, this_nod, dir))) +- errexit("can't find directory '%s' to create '%s''", dir, name); +- free(dir); +- if((!strcmp(name, ".")) || (!strcmp(name, ".."))) +- { +- free(name); +- continue; +- } +- switch(*cmod) +- { +- case 'd': +- mkdir_fs(fs, nod, name, mode); +- break; +- case 'c': +- case 'b': +- nod2 = alloc_nod(fs); +- get_nod(fs, nod2)->i_mode = mode; +- ((uint8*)get_nod(fs, nod2)->i_block)[0] = minor; +- ((uint8*)get_nod(fs, nod2)->i_block)[1] = major; +- add2dir(fs, nod, nod2, name); +- break; +- } +- free(name); +- } +-} +- + // adds a tree of entries to the filesystem from current dir + void add2fs_from_dir(filesystem *fs, uint32 this_nod) + { +@@ -934,7 +1188,7 @@ + struct stat st; + uint8 *b; + if(!(dh = opendir("."))) +- pexit("."); ++ perror_msg_and_die("."); + while((dent = readdir(dh))) + { + if((!strcmp(dent->d_name, ".")) || (!strcmp(dent->d_name, ".."))) +@@ -948,31 +1202,27 @@ + get_nod(fs, nod)->i_mode = (((st.st_mode & S_IFMT) == S_IFCHR) ? FM_IFCHR : FM_IFBLK) | get_mode(&st); + ((uint8*)get_nod(fs, nod)->i_block)[0] = (st.st_rdev & 0xff); + ((uint8*)get_nod(fs, nod)->i_block)[1] = (st.st_rdev >> 8); +- add2dir(fs, this_nod, nod, dent->d_name); ++ add2dir(fs, this_nod, nod, dent->d_name, st.st_mode, st.st_uid, st.st_gid, st.st_ctime); + break; + case S_IFLNK: +- if(!(b = (uint8*)malloc(rndup(st.st_size, BLOCKSIZE)))) +- errexit("out of memory"); +- if(readlink(dent->d_name, (char*)b, st.st_size) < 0) +- pexit(dent->d_name); +- mklink_fs(fs, this_nod, dent->d_name, st.st_size, b); ++ b = xreadlink(dent->d_name); ++ mklink_fs(fs, this_nod, dent->d_name, st.st_size, b, st.st_uid, st.st_gid, st.st_ctime); + free(b); + break; + case S_IFREG: +- if(!(fh = fopen(dent->d_name, "r"))) +- pexit(dent->d_name); +- mkfile_fs(fs, this_nod, dent->d_name, get_mode(&st), st.st_size, fh); ++ fh = xfopen(dent->d_name, "r"); ++ mkfile_fs(fs, this_nod, dent->d_name, st.st_mode, st.st_size, fh, st.st_uid, st.st_gid, st.st_ctime); + fclose(fh); + break; + case S_IFDIR: +- nod = mkdir_fs(fs, this_nod, dent->d_name, get_mode(&st)); ++ nod = mkdir_fs(fs, this_nod, dent->d_name, st.st_mode, st.st_uid, st.st_gid, st.st_ctime); + if(chdir(dent->d_name) < 0) +- pexit(dent->d_name); ++ perror_msg_and_die(dent->d_name); + add2fs_from_dir(fs, nod); + chdir(".."); + break; + default: +- fprintf(stderr, "ignoring entry %s", dent->d_name); ++ error_msg("ignoring entry %s", dent->d_name); + } + } + closedir(dh); +@@ -981,9 +1231,11 @@ + // endianness swap of x-indirect blocks + void swap_goodblocks(filesystem *fs, inode *nod) + { +- int i; ++ int i,j,done=0; ++ uint32 *b,*b2; ++ + int nblk = nod->i_blocks / INOBLK; +- if((nod->i_size && !nblk) || (nod->i_mode & (FM_IFBLK | FM_IFCHR))) ++ if((nod->i_size && !nblk) || ((nod->i_mode & FM_IFBLK) == FM_IFBLK) || ((nod->i_mode & FM_IFCHR) == FM_IFCHR)) + for(i = 0; i <= EXT2_TIND_BLOCK; i++) + nod->i_block[i] = swab32(nod->i_block[i]); + if(nblk <= EXT2_IND_BLOCK) +@@ -991,20 +1243,55 @@ + swap_block(get_blk(fs, nod->i_block[EXT2_IND_BLOCK])); + if(nblk <= EXT2_IND_BLOCK + BLOCKSIZE/4) + return; ++ /* Currently this will fail b'cos the number of blocks as stored ++ in i_blocks also includes the indirection blocks (see ++ walk_bw). But this function assumes that i_blocks only ++ stores the count of data blocks ( Actually according to ++ "Understanding the Linux Kernel" (Table 17-3 p502 1st Ed) ++ i_blocks IS supposed to store the count of data blocks). so ++ with a file of size 268K nblk would be 269.The above check ++ will be false even though double indirection hasn't been ++ started.This is benign as 0 means block 0 which has been ++ zeroed out and therefore points back to itself from any offset ++ */ ++ assert(nod->i_block[EXT2_DIND_BLOCK] != 0); + for(i = 0; i < BLOCKSIZE/4; i++) ++ /* Should this be... ++ if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + (BLOCKSIZE/4)*i ) ++ */ + if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + i) + swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[i])); + swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK])); + if(nblk <= EXT2_IND_BLOCK + BLOCKSIZE/4 + BLOCKSIZE/4 * BLOCKSIZE/4) + return; +- errexit("too big file on the filesystem"); ++ /* Adding support for triple indirection */ ++ b = (uint32*)get_blk(fs,nod->i_block[EXT2_TIND_BLOCK]); ++ for(i=0;i < BLOCKSIZE/4 && !done ; i++) { ++ b2 = (uint32*)get_blk(fs,b[i]); ++ for(j=0; j<BLOCKSIZE/4;j++) { ++ if (nblk > ( EXT2_IND_BLOCK + BLOCKSIZE/4 + ++ (BLOCKSIZE/4)*(BLOCKSIZE/4) + ++ i*(BLOCKSIZE/4)*(BLOCKSIZE/4) + ++ j*(BLOCKSIZE/4)) ) ++ swap_block(get_blk(fs,b2[j])); ++ else { ++ done = 1; ++ break; ++ } ++ } ++ swap_block((uint8 *)b2); ++ } ++ swap_block((uint8 *)b); ++ return; + } + + void swap_badblocks(filesystem *fs, inode *nod) + { +- int i; ++ int i,j,done=0; ++ uint32 *b,*b2; ++ + int nblk = nod->i_blocks / INOBLK; +- if((nod->i_size && !nblk) || (nod->i_mode & (FM_IFBLK | FM_IFCHR))) ++ if((nod->i_size && !nblk) || ((nod->i_mode & FM_IFBLK) == FM_IFBLK) || ((nod->i_mode & FM_IFCHR) == FM_IFCHR)) + for(i = 0; i <= EXT2_TIND_BLOCK; i++) + nod->i_block[i] = swab32(nod->i_block[i]); + if(nblk <= EXT2_IND_BLOCK) +@@ -1012,13 +1299,34 @@ + swap_block(get_blk(fs, nod->i_block[EXT2_IND_BLOCK])); + if(nblk <= EXT2_IND_BLOCK + BLOCKSIZE/4) + return; ++ /* See comment in swap_goodblocks */ ++ assert(nod->i_block[EXT2_DIND_BLOCK] != 0); + swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK])); + for(i = 0; i < BLOCKSIZE/4; i++) ++ /* See comment in swap_goodblocks */ + if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + i) + swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[i])); + if(nblk <= EXT2_IND_BLOCK + BLOCKSIZE/4 + BLOCKSIZE/4 * BLOCKSIZE/4) + return; +- errexit("too big file on the filesystem"); ++ /* Adding support for triple indirection */ ++ b = (uint32*)get_blk(fs,nod->i_block[EXT2_TIND_BLOCK]); ++ swap_block((uint8 *)b); ++ for(i=0;i < BLOCKSIZE/4 && !done ; i++) { ++ b2 = (uint32*)get_blk(fs,b[i]); ++ swap_block((uint8 *)b2); ++ for(j=0; j<BLOCKSIZE/4;j++) { ++ if (nblk > ( EXT2_IND_BLOCK + BLOCKSIZE/4 + ++ (BLOCKSIZE/4)*(BLOCKSIZE/4) + ++ i*(BLOCKSIZE/4)*(BLOCKSIZE/4) + ++ j*(BLOCKSIZE/4)) ) ++ swap_block(get_blk(fs,b2[j])); ++ else { ++ done = 1; ++ break; ++ } ++ } ++ } ++ return; + } + + // endianness swap of the whole filesystem +@@ -1045,7 +1353,8 @@ + swap_goodblocks(fs, nod); + swap_nod(nod); + } +- swap_gd(&fs->gd); ++ for(i=0;i<GRP_NBGROUPS(fs);i++) ++ swap_gd(&(fs->gd[i])); + swap_sb(&fs->sb); + } + +@@ -1053,7 +1362,8 @@ + { + int i; + swap_sb(&fs->sb); +- swap_gd(&fs->gd); ++ for(i=0;i<GRP_NBGROUPS(fs);i++) ++ swap_gd(&(fs->gd[i])); + for(i = 1; i < fs->sb.s_inodes_count; i++) + { + inode *nod = get_nod(fs, i); +@@ -1084,53 +1394,118 @@ + directory *d; + uint8 * b; + uint32 nod; ++ uint32 nbgroups,nbinodes_per_group,overhead_per_group,free_blocks, ++ free_blocks_per_group,nbblocks_per_group; ++ uint32 gd,itbl,ibmpos,bbmpos,itblpos; ++ int j; ++ uint8 *bbm,*ibm; ++ inode *itab0; + + if(nbblocks < 16) // totally arbitrary +- errexit("too small filesystem"); +- if(nbblocks >BLOCKS_PER_GROUP) // I build only one group +- errexit("too big filesystem"); ++ error_msg_and_die("too small filesystem"); ++ ++ /* nbblocks is the total number of blocks in the system. First ++ * calculate how much overhead blocks - inode table blocks,bitmap ++ * blocks,group descriptor blocks etc. - are needed assuming each ++ * group has BLOCKS_PER_GROUP blocks.Then recalculate nbblocks with ++ * this figure. Each group has the same number of blocks. So the fs ++ * has a size atleast the given value but usually rounded off to a i ++ * higher number. ++ */ ++ nbgroups = rndup(nbblocks,BLOCKS_PER_GROUP)/ BLOCKS_PER_GROUP; ++ nbinodes_per_group = nbinodes/nbgroups +1; ++ nbinodes_per_group = rndup(nbinodes_per_group, BLOCKSIZE/sizeof(inode)); ++ if (nbinodes_per_group < 16) ++ nbinodes_per_group = 16; //minimum number b'cos the first 10 are reserved ++ overhead_per_group = 3 /*super block,ibm,bbm*/ ++ + /* No. of blocks that the inodes occupy */ ++ nbinodes_per_group *sizeof(inode)/BLOCKSIZE ++ + /* No. of blocks that group descriptors occupy */ ++ rndup(nbgroups*sizeof(groupdescriptor),BLOCKSIZE)/BLOCKSIZE; ++ free_blocks = nbblocks - overhead_per_group * nbgroups - 1 /*boot block */; ++ free_blocks_per_group = free_blocks/nbgroups; ++ if (free_blocks > free_blocks_per_group * nbgroups) ++ free_blocks_per_group++; ++ nbblocks_per_group = free_blocks_per_group + overhead_per_group; ++ /* e2fsck complains if nbblocks_per_group is not a multiple of 8 */ ++ nbblocks_per_group = rndup(nbblocks_per_group,8); ++ free_blocks_per_group = nbblocks_per_group - overhead_per_group; ++ if (nbblocks_per_group > BLOCKS_PER_GROUP) { ++ /* Can this happen ? */ ++ nbblocks_per_group = BLOCKS_PER_GROUP; ++ free_blocks_per_group = nbblocks_per_group - overhead_per_group; ++ } ++ nbblocks = nbblocks_per_group * nbgroups + 1; ++ ++ + if(!(fs = (filesystem*)calloc(nbblocks, BLOCKSIZE))) +- errexit("not enough memory for filesystem"); ++ error_msg_and_die("not enough memory for filesystem"); + + // create the superblock for an empty filesystem +- fs->sb.s_inodes_count = rndup(nbinodes, BLOCKSIZE/sizeof(inode)); ++ fs->sb.s_inodes_count = nbinodes_per_group * nbgroups; + fs->sb.s_blocks_count = nbblocks; + fs->sb.s_r_blocks_count = nbresrvd; +- fs->sb.s_free_blocks_count = nbblocks; ++ fs->sb.s_free_blocks_count = free_blocks_per_group*nbgroups; + fs->sb.s_free_inodes_count = fs->sb.s_inodes_count - EXT2_FIRST_INO + 1; + fs->sb.s_first_data_block = (BLOCKSIZE == 1024); + fs->sb.s_log_block_size = BLOCKSIZE >> 11; + fs->sb.s_log_frag_size = BLOCKSIZE >> 11; +- fs->sb.s_blocks_per_group = BLOCKS_PER_GROUP; +- fs->sb.s_frags_per_group = BLOCKS_PER_GROUP; +- fs->sb.s_inodes_per_group = fs->sb.s_inodes_count; ++ fs->sb.s_blocks_per_group = nbblocks_per_group; ++ fs->sb.s_frags_per_group = nbblocks_per_group; ++ fs->sb.s_inodes_per_group = nbinodes_per_group; + fs->sb.s_magic = EXT2_MAGIC_NUMBER; + + // set up groupdescriptors +- fs->sb.s_free_blocks_count -= 5 + fs->sb.s_inodes_count * sizeof(inode) / BLOCKSIZE; +- fs->gd.bg_free_blocks_count = fs->sb.s_free_blocks_count; +- fs->gd.bg_free_inodes_count = fs->sb.s_free_inodes_count; +- fs->gd.bg_used_dirs_count = 1; +- fs->gd.bg_block_bitmap = 3; +- fs->gd.bg_inode_bitmap = 4; +- fs->gd.bg_inode_table = 5; +- +- // mark non-filesystem blocks and inodes as allocated +- for(i = fs->sb.s_blocks_count; i <= BLOCKSIZE * 8; i++) +- allocate(fs->bbm, i); +- for(i = fs->sb.s_inodes_count + 1; i <= BLOCKSIZE * 8; i++) +- allocate(fs->ibm, i); +- +- // mark system blocsk and inodes as allocated +- for(i = 1; i <= 4 + fs->sb.s_inodes_count * sizeof(inode) / BLOCKSIZE; i++) +- allocate(fs->bbm, i); +- for(i = 1; i < EXT2_FIRST_INO; i++) +- allocate(fs->ibm, i); +- +- // make root inode and directory +- fs->itab[EXT2_ROOT_INO-1].i_mode = FM_IFDIR | FM_IRWXU | FM_IRWXG | FM_IRWXO; +- fs->itab[EXT2_ROOT_INO-1].i_size = BLOCKSIZE; +- fs->itab[EXT2_ROOT_INO-1].i_links_count = 2; ++ gd = rndup(nbgroups*sizeof(groupdescriptor),BLOCKSIZE)/BLOCKSIZE; ++ itbl = nbinodes_per_group*sizeof(inode)/BLOCKSIZE; ++ for(i = 0,bbmpos=2+gd,ibmpos=3+gd,itblpos =4+gd; ++ i<nbgroups; ++ i++, bbmpos += nbblocks_per_group,ibmpos += nbblocks_per_group, ++ itblpos += nbblocks_per_group) { ++ ++ fs->gd[i].bg_free_blocks_count = free_blocks_per_group; ++ fs->gd[i].bg_free_inodes_count = nbinodes_per_group; ++ fs->gd[i].bg_used_dirs_count = 0; ++ fs->gd[i].bg_block_bitmap = bbmpos; ++ fs->gd[i].bg_inode_bitmap = ibmpos; ++ fs->gd[i].bg_inode_table = itblpos; ++ } ++ ++ /* Mark non-filesystem blocks and inodes as allocated */ ++ /* Mark system blocks and inodes as allocated */ ++ for(i = 0; i<nbgroups;i++) { ++ ++ /* Block bitmap */ ++ bbm = get_blk(fs,fs->gd[i].bg_block_bitmap); ++ //non-filesystem blocks. ++ for(j=fs->sb.s_blocks_per_group + 1; j <= BLOCKSIZE * 8; j++) ++ allocate(bbm, j); ++ //system blocks ++ for(j = 1; j <= 3+gd+itbl; j++) ++ allocate(bbm, j); ++ ++ /* Inode bitmap */ ++ ibm = get_blk(fs,fs->gd[i].bg_inode_bitmap); ++ //non-filesystem inodes ++ for(j = fs->sb.s_inodes_per_group+1; j <= BLOCKSIZE * 8; j++) ++ allocate(ibm, j); ++ } ++ ++ /* We have groups now. Add the root filesystem in group 0 */ ++ /* Also allocate the system inodes in group 0 and update */ ++ /* directory count and inode count for group 0 */ ++ ++ ibm = get_blk(fs,fs->gd[0].bg_inode_bitmap); ++ for(j = 1; j < EXT2_FIRST_INO; j++) { ++ allocate(ibm, j); ++ fs->gd[0].bg_free_inodes_count--; ++ } ++ fs->gd[0].bg_used_dirs_count = 1; ++ itab0 = (inode *)get_blk(fs,fs->gd[0].bg_inode_table); ++ itab0[EXT2_ROOT_INO-1].i_mode = FM_IFDIR | FM_IRWXU | FM_IRWXG | FM_IRWXO; ++ itab0[EXT2_ROOT_INO-1].i_size = BLOCKSIZE; ++ itab0[EXT2_ROOT_INO-1].i_links_count = 2; ++ + b = get_workblk(); + d = (directory*)b; + d->d_inode = EXT2_ROOT_INO; +@@ -1147,9 +1522,14 @@ + // make lost+found directory and reserve blocks + if(fs->sb.s_r_blocks_count) + { +- nod = mkdir_fs(fs, EXT2_ROOT_INO, "lost+found", FM_IRWXU | FM_IRWXG | FM_IRWXO); ++ nod = mkdir_fs(fs, EXT2_ROOT_INO, "lost+found", S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH, 0, 0, time(NULL)); + memset(b, 0, BLOCKSIZE); + ((directory*)b)->d_rec_len = BLOCKSIZE; ++ /* We run into problems with e2fsck if directory lost+found grows ++ * bigger than this. Need to find out why this happens - sundar ++ */ ++ if (fs->sb.s_r_blocks_count > 2049 ) ++ fs->sb.s_r_blocks_count=2049; + for(i = 1; i < fs->sb.s_r_blocks_count; i++) + extend_blk(fs, nod, b, 1); + get_nod(fs, nod)->i_size = fs->sb.s_r_blocks_count * BLOCKSIZE; +@@ -1170,24 +1550,24 @@ + // loads a filesystem from disk + filesystem * load_fs(FILE * fh, int swapit) + { +- size_t fssize; ++ size_t fssize = 0; + filesystem *fs; + if((fseek(fh, 0, SEEK_END) < 0) || ((fssize = ftell(fh)) < 0)) +- pexit("input filesystem image"); ++ perror_msg_and_die("input filesystem image"); + rewind(fh); + fssize = (fssize + BLOCKSIZE - 1) / BLOCKSIZE; + if(fssize < 16) // totally arbitrary +- errexit("too small filesystem"); +- if(fssize > BLOCKS_PER_GROUP) // I build only one group +- errexit("too big filesystem"); ++ error_msg_and_die("too small filesystem"); ++/* if(fssize > BLOCKS_PER_GROUP) // I build only one group ++ error_msg_and_die("too big filesystem"); */ + if(!(fs = (filesystem*)calloc(fssize, BLOCKSIZE))) +- errexit("not enough memory for filesystem"); ++ error_msg_and_die("not enough memory for filesystem"); + if(fread(fs, BLOCKSIZE, fssize, fh) != fssize) +- pexit("input filesystem image"); ++ perror_msg_and_die("input filesystem image"); + if(swapit) + swap_badfs(fs); + if(fs->sb.s_rev_level || (fs->sb.s_magic != EXT2_MAGIC_NUMBER)) +- errexit("not a suitable ext2 filesystem"); ++ error_msg_and_die("not a suitable ext2 filesystem"); + return fs; + } + +@@ -1230,9 +1610,9 @@ + while((bk = walk_bw(fs, nod, &bw, 0, 0)) != WALK_END) + { + if(fsize <= 0) +- errexit("wrong size while saving inode %d", nod); ++ error_msg_and_die("wrong size while saving inode %d", nod); + if(fwrite(get_blk(fs, bk), (fsize > BLOCKSIZE) ? BLOCKSIZE : fsize, 1, f) != 1) +- errexit("error while saving inode %d", nod); ++ error_msg_and_die("error while saving inode %d", nod); + fsize -= BLOCKSIZE; + } + } +@@ -1250,7 +1630,7 @@ + { + int i, j; + if(fsize <= 0) +- errexit("wrong size while saving inode %d", nod); ++ error_msg_and_die("wrong size while saving inode %d", nod); + b = get_blk(fs, bk); + for(i = 0; i < 64; i++) + { +@@ -1406,7 +1786,7 @@ + s = (nod >= EXT2_FIRST_INO) ? "normal" : "unknown reserved"; + } + printf("inode %d (%s, %d links): ", nod, s, get_nod(fs, nod)->i_links_count); +- if(!allocated(fs->ibm, nod)) ++ if(!allocated(GRP_GET_INODE_BITMAP(fs,nod), GRP_IBM_OFFSET(fs,nod))) + { + printf("unallocated\n"); + return; +@@ -1440,24 +1820,46 @@ + default: + list_blocks(fs, nod); + } ++ printf("Done with inode %d\n",nod); + } + + // describes various fields in a filesystem + void print_fs(filesystem *fs) + { +- int i; +- printf("%d blocks (%d free, %d reserved), first data block: %d\n", fs->sb.s_blocks_count, fs->sb.s_free_blocks_count, fs->sb.s_r_blocks_count, fs->sb.s_first_data_block); +- printf("%d inodes (%d free)\n", fs->sb.s_inodes_count, fs->sb.s_free_inodes_count); +- printf("block size = %d, frag size = %d\n", fs->sb.s_log_block_size ? (fs->sb.s_log_block_size << 11) : 1024, fs->sb.s_log_frag_size ? (fs->sb.s_log_frag_size << 11) : 1024); +- printf("%d blocks per group, %d frags per group, %d inodes per group\n", fs->sb.s_blocks_per_group, fs->sb.s_frags_per_group, fs->sb.s_inodes_per_group); +- printf("block bitmap: block %d, inode bitmap: block %d, inode table: block %d\n", fs->gd.bg_block_bitmap, fs->gd.bg_inode_bitmap, fs->gd.bg_inode_table); +- printf("block bitmap allocation:\n"); +- print_bm(fs->bbm, fs->sb.s_blocks_count); +- printf("inode bitmap allocation:\n"); +- print_bm(fs->ibm, fs->sb.s_inodes_count); +- for(i=1; i<=fs->sb.s_inodes_count; i++) +- if(allocated(fs->ibm, i)) +- print_inode(fs, i); ++ int i,j; ++ uint8 *ibm; ++ ++ printf("%d blocks (%d free, %d reserved), first data block: %d\n", ++ fs->sb.s_blocks_count, fs->sb.s_free_blocks_count, ++ fs->sb.s_r_blocks_count, fs->sb.s_first_data_block); ++ printf("%d inodes (%d free)\n", fs->sb.s_inodes_count, ++ fs->sb.s_free_inodes_count); ++ printf("block size = %d, frag size = %d\n", ++ fs->sb.s_log_block_size ? (fs->sb.s_log_block_size << 11) : 1024, ++ fs->sb.s_log_frag_size ? (fs->sb.s_log_frag_size << 11) : 1024); ++ printf("Number of groups: %d\n",GRP_NBGROUPS(fs)); ++ printf("%d blocks per group,%d frags per group,%d inodes per group\n", ++ fs->sb.s_blocks_per_group, fs->sb.s_frags_per_group, ++ fs->sb.s_inodes_per_group); ++ printf("Size of inode table: %d blocks\n", ++ fs->sb.s_inodes_per_group * sizeof(inode)/BLOCKSIZE); ++ for (i = 0; i < GRP_NBGROUPS(fs); i++) { ++ printf("Group No: %d\n", i); ++ printf("block bitmap: block %d,inode bitmap: block %d, inode table: block %d\n", ++ fs->gd[i].bg_block_bitmap, fs->gd[i].bg_inode_bitmap, ++ fs->gd[i].bg_inode_table); ++ printf("Free blocks count: %d\n",fs->gd[i].bg_free_blocks_count); ++ printf("Free inodes count: %d\n",fs->gd[i].bg_free_inodes_count); ++ printf("Used dir count: %d\n",fs->gd[i].bg_used_dirs_count); ++ printf("block bitmap allocation:\n"); ++ print_bm(GRP_GET_GROUP_BBM(fs, i),fs->sb.s_blocks_per_group); ++ printf("inode bitmap allocation:\n"); ++ ibm = GRP_GET_GROUP_IBM(fs, i); ++ print_bm(ibm, fs->sb.s_inodes_per_group); ++ for (j = 1; j <= fs->sb.s_inodes_per_group; j++) ++ if (allocated(ibm, j)) ++ print_inode(fs, i*fs->sb.s_inodes_per_group + j); ++ } + } + + void dump_fs(filesystem *fs, FILE * fh, int swapit) +@@ -1467,31 +1869,234 @@ + if(swapit) + swap_goodfs(fs); + if(fwrite(fs, BLOCKSIZE, nbblocks, fh) < nbblocks) +- pexit("output filesystem image"); ++ perror_msg_and_die("output filesystem image"); + if(swapit) + swap_badfs(fs); + } + ++/* device table entries take the form of: ++ <path> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count> ++ /dev/mem c 640 0 0 1 1 0 0 - ++ ++ type can be one of: ++ f A regular file ++ d Directory ++ c Character special device file ++ b Block special device file ++ p Fifo (named pipe) ++ ++ I don't bother with symlinks (permissions are irrelevant), hard ++ links (special cases of regular files), or sockets (why bother). ++ ++ Regular files must exist in the target root directory. If a char, ++ block, fifo, or directory does not exist, it will be created. ++*/ ++static int interpret_table_entry(filesystem *fs, char *line) ++{ ++ char type, *name = NULL, *tmp, *dir, *bname; ++ unsigned long mode = 0755, uid = 0, gid = 0, major = 0, minor = 0; ++ unsigned long start = 0, increment = 1, count = 0; ++ inode *entry; ++ uint32 nod, parent; ++ ++ if (sscanf (line, "%" SCANF_PREFIX "s %c %lo %lu %lu %lu %lu %lu %lu %lu", ++ SCANF_STRING(name), &type, &mode, &uid, &gid, &major, &minor, ++ &start, &increment, &count) < 0) ++ { ++ return 1; ++ } ++ ++ if (!strcmp(name, "/")) { ++ error_msg_and_die("Device table entries require absolute paths"); ++ } ++ ++ /* Check if this file already exists... */ ++ switch (type) { ++ case 'd': ++ mode |= S_IFDIR; ++ break; ++ case 'f': ++ mode |= S_IFREG; ++ break; ++ case 'p': ++ mode |= S_IFIFO; ++ break; ++ case 'c': ++ mode |= S_IFCHR; ++ break; ++ case 'b': ++ mode |= S_IFBLK; ++ break; ++ default: ++ error_msg_and_die("Unsupported file type"); ++ } ++ nod = 0; ++ if (count==0) ++ nod = find_path(fs, EXT2_ROOT_INO, name); ++ if (nod) { ++ /* Ok, we just need to fixup an existing entry ++ * and we will be all done... */ ++ entry = get_nod(fs, nod); ++ entry->i_uid = uid; ++ entry->i_gid = gid; ++ entry->i_mode = mode; ++ if (major) { ++ dev_t rdev = makedev(major, minor); ++ ((uint8*)entry->i_block)[0] = (rdev & 0xff); ++ ((uint8*)entry->i_block)[1] = (rdev >> 8); ++ } ++ } else { ++ /* Try and find our parent now */ ++ tmp = xstrdup(name); ++ dir = dirname(tmp); ++ parent = find_path(fs, EXT2_ROOT_INO, dir); ++ free(tmp); ++ if (!parent) { ++ error_msg ("skipping device_table entry '%s': no parent directory!", name); ++ free(name); ++ return 1; ++ } ++ ++ tmp = xstrdup(name); ++ bname = xstrdup(basename(tmp)); ++ free(tmp); ++ switch (type) { ++ case 'd': ++ mkdir_fs(fs, parent, bname, mode|FM_IFDIR, uid, gid, time(NULL)); ++ break; ++ case 'f': ++#if 0 ++ { ++ // This is a bit odd.. This will try to include ++ // the file of the same name from your _build_ ++ // system... Probably a very bad idea.... ++ struct stat st; ++ FILE *fh = xfopen(name, "r"); ++ lstat(name, &st); ++ mkfile_fs(fs, parent, bname, mode|FM_IFREG, st.st_size, fh, uid, gid, st.st_ctime); ++ fclose(fh); ++ } ++#else ++ error_msg("ignoring entry %s", name); ++#endif ++ break; ++ case 'p': ++ error_msg("ignoring entry %s", name); ++ break; ++ case 'c': ++ case 'b': ++ if (count > 0) { ++ dev_t rdev; ++ char *dname; ++ unsigned long i; ++ for (i = start; i < count; i++) { ++ asprintf(&dname, "%s%lu", bname, i); ++ nod = find_path(fs, EXT2_ROOT_INO, dname); ++ if (nod) { ++ /* We just need to fixup an existing entry */ ++ entry = get_nod(fs, nod); ++ } else { ++ nod = alloc_nod(fs); ++ add2dir(fs, parent, nod, dname, mode, uid, gid, time(NULL)); ++ entry = get_nod(fs, nod); ++ } ++ entry->i_uid = uid; ++ entry->i_gid = gid; ++ entry->i_mode = mode; ++ rdev = makedev(major, minor + (i * increment - start)); ++ ((uint8*)entry->i_block)[0] = (rdev & 0xff); ++ ((uint8*)entry->i_block)[1] = (rdev >> 8); ++ free(dname); ++ } ++ } else { ++ dev_t rdev = makedev(major, minor); ++ nod = alloc_nod(fs); ++ add2dir(fs, parent, nod, bname, mode, uid, gid, time(NULL)); ++ entry = get_nod(fs, nod); ++ ((uint8*)entry->i_block)[0] = (rdev & 0xff); ++ ((uint8*)entry->i_block)[1] = (rdev >> 8); ++ } ++ break; ++ default: ++ error_msg_and_die("Unsupported file type"); ++ } ++ free(bname); ++ } ++ free(name); ++ return 0; ++} ++ ++static int parse_device_table(filesystem *root, FILE * file) ++{ ++ char *line; ++ int status = 0; ++ size_t length = 0; ++ ++ /* Turn off squash, since we must ensure that values ++ * entered via the device table are not squashed */ ++ squash_uids = 0; ++ squash_perms = 0; ++ ++ /* Looks ok so far. The general plan now is to read in one ++ * line at a time, check for leading comment delimiters ('#'), ++ * then try and parse the line as a device table. If we fail ++ * to parse things, try and help the poor fool to fix their ++ * device table with a useful error msg... */ ++ line = NULL; ++ while (getline(&line, &length, file) != -1) { ++ /* First trim off any whitespace */ ++ int len = strlen(line); ++ ++ /* trim trailing whitespace */ ++ while (len > 0 && isspace(line[len - 1])) ++ line[--len] = '\0'; ++ /* trim leading whitespace */ ++ memmove(line, &line[strspn(line, " \n\r\t\v")], len); ++ ++ /* How long are we after trimming? */ ++ len = strlen(line); ++ ++ /* If this is NOT a comment line, try to interpret it */ ++ if (len && *line != '#') { ++ if (interpret_table_entry(root, line)) ++ status = 1; ++ } ++ ++ free(line); ++ line = NULL; ++ } ++ fclose(file); ++ ++ return status; ++} ++ ++/* ++Local Variables: ++c-file-style: "linux" ++c-basic-offset: 4 ++tab-width: 4 ++End: ++*/ ++ + void showhelp(void) + { + fprintf(stderr, "Usage: %s [options] image\n" + "Create an ext2 filesystem image from directories/files\n\n" +- " -x image Use this image as a starting point\n" +- " -d directory Add this directory as source\n" +- " -f file Add nodes (e.g. devices) from this spec file\n" +- " -b blocks Size in blocks\n" +- " -i inodes Number of inodes\n" +- " -r reserved Number of reserved blocks\n" +- " -g path Generate a block map file for this path\n" +- " -e value Fill unallocated blocks with value\n" +- " -z Make files with holes\n" +- " -v Print resulting filesystem structure\n" +- " -h Show this help\n\n" +- "Example of spec file:\n" +- "drwx /dev\n" +- "crw- 10,190 /dev/lcd\n" +- "brw- 1,0 /dev/ram0\n\n" +- "Report bugs to xavier.bestel@free.fr\n", argv0); ++ " -x image Use this image as a starting point\n" ++ " -d directory Add this directory as source\n" ++ " -b blocks Size in blocks\n" ++ " -i inodes Number of inodes\n" ++ " -r reserved Number of reserved blocks\n" ++ " -g path Generate a block map file for this path\n" ++ " -e value Fill unallocated blocks with value\n" ++ " -z Make files with holes\n" ++ " -D,-f Use the named FILE as a device table file\n" ++ " -q Squash permissions and owners making all files be owned by root\n" ++ " -U Squash owners making all files be owned by root\n" ++ " -P Squash permissions on all files\n" ++ " -v Print resulting filesystem structure\n" ++ " -h Show this help\n\n" ++ "Report bugs to xavier.bestel@free.fr\n", app_name); + } + + #define MAX_DOPT 128 +@@ -1521,21 +2126,17 @@ + filesystem *fs; + int i; + int c; ++ struct stat sb; ++ FILE *devtable = NULL; + +- argv0 = argv[0]; +- if(argc <= 1) +- { +- showhelp(); +- exit(1); +- } +- while((c = getopt(argc, argv, "x:f:d:b:i:r:g:e:zvh")) != EOF) ++ app_name = argv[0]; ++ while((c = getopt(argc, argv, "x:d:b:i:r:g:e:zvhD:f:qUP")) != EOF) + switch(c) + { + case 'x': + fsin = optarg; + break; + case 'd': +- case 'f': + dopt[didx++] = optarg; + break; + case 'b': +@@ -1556,6 +2157,24 @@ + case 'z': + holes = 1; + break; ++ case 'f': ++ case 'D': ++ devtable = xfopen(optarg, "r"); ++ if (fstat(fileno(devtable), &sb) < 0) ++ perror_msg_and_die(optarg); ++ if (sb.st_size < 10) ++ error_msg_and_die("%s: not a proper device table file", optarg); ++ break; ++ case 'q': ++ squash_uids = 1; ++ squash_perms = 1; ++ break; ++ case 'U': ++ squash_uids = 1; ++ break; ++ case 'P': ++ squash_perms = 1; ++ break; + case 'v': + verbose = 1; + break; +@@ -1566,16 +2185,14 @@ + exit(1); + } + if(optind < (argc - 1)) +- errexit("too many arguments"); ++ error_msg_and_die("too many arguments"); + if(optind == (argc - 1)) + fsout = argv[optind]; + if(fsin) + { + if(strcmp(fsin, "-")) + { +- FILE * fh = fopen(fsin, "r"); +- if(!fh) +- pexit(fsin); ++ FILE * fh = xfopen(fsin, "r"); + fs = load_fs(fh, bigendian); + fclose(fh); + } +@@ -1585,7 +2202,7 @@ + else + { + if(nbblocks == -1) +- errexit("filesystem size unspecified"); ++ error_msg_and_die("filesystem size unspecified"); + if(nbinodes == -1) + nbinodes = nbblocks * BLOCKSIZE / rndup(BYTES_PER_INODE, BLOCKSIZE); + if(nbresrvd == -1) +@@ -1595,35 +2212,30 @@ + for(i = 0; i < didx; i++) + { + struct stat st; +- FILE *fh; + char *pdir; + stat(dopt[i], &st); + switch(st.st_mode & S_IFMT) + { +- case S_IFREG: +- if(!(fh = fopen(dopt[i], "r"))) +- pexit(dopt[i]); +- add2fs_from_file(fs, EXT2_ROOT_INO, fh); +- fclose(fh); +- break; + case S_IFDIR: + if(!(pdir = getcwd(0, GETCWD_SIZE))) +- pexit(dopt[i]); ++ perror_msg_and_die(dopt[i]); + if(chdir(dopt[i]) < 0) +- pexit(dopt[i]); ++ perror_msg_and_die(dopt[i]); + add2fs_from_dir(fs, EXT2_ROOT_INO); + if(chdir(pdir) < 0) +- pexit(pdir); ++ perror_msg_and_die(pdir); + free(pdir); + break; + default: +- errexit("%s in neither a file nor a directory", dopt[i]); ++ error_msg_and_die("%s is neither a file nor a directory", dopt[i]); + } + } + if(emptyval) + for(i = 1; i < fs->sb.s_blocks_count; i++) +- if(!allocated(fs->bbm, i)) ++ if(!allocated(GRP_GET_BLOCK_BITMAP(fs,i),GRP_BBM_OFFSET(fs,i))) + memset(get_blk(fs, i), emptyval, BLOCKSIZE); ++ if(devtable) ++ parse_device_table(fs, devtable); + if(verbose) + print_fs(fs); + for(i = 0; i < gidx; i++) +@@ -1633,21 +2245,18 @@ + char *p; + FILE *fh; + if(!(nod = find_path(fs, EXT2_ROOT_INO, gopt[i]))) +- errexit("path %s not found in filesystem", gopt[i]); ++ error_msg_and_die("path %s not found in filesystem", gopt[i]); + while((p = strchr(gopt[i], '/'))) + *p = '_'; + snprintf(fname, MAX_FILENAME-1, "%s.blk", gopt[i]); +- if(!(fh = fopen(fname, "w"))) +- pexit(fname); ++ fh = xfopen(fname, "w"); + fprintf(fh, "%d:", get_nod(fs, nod)->i_size); + flist_blocks(fs, nod, fh); + fclose(fh); + } + if(strcmp(fsout, "-")) + { +- FILE * fh = fopen(fsout, "w"); +- if(!fh) +- pexit(fsout); ++ FILE * fh = xfopen(fsout, "w"); + dump_fs(fs, fh, bigendian); + fclose(fh); + } +diff -urN genext2fs-1.3.orig/test-mount.sh genext2fs-1.3/test-mount.sh +--- genext2fs-1.3.orig/test-mount.sh 1969-12-31 17:00:00.000000000 -0700 ++++ genext2fs-1.3/test-mount.sh 2003-04-21 01:41:42.000000000 -0600 +@@ -0,0 +1,96 @@ ++#!/bin/sh ++set -e ++ ++cleanup () { ++ set +e ++ umount mnt 2>/dev/null ++ rm -rf mnt ext2.img lsout fout test 2>/dev/null ++} ++ ++# dtest - Uses the -d directory option of genext2fs ++# Creates an image with a file of given size and verifies it ++# Usage: dtest file-size number-of-blocks ++dtest () { ++ size=$1; blocks=$2;fname=$size ++ echo "Testing with file of size $size " ++ mkdir -p test ++ cd test ++ dd if=/dev/zero of=file.$1 bs=1 count=$size ++ cd .. ++ ./genext2fs -b $blocks -d test ext2.img ++ md5=`md5sum ext2.img | cut -f1 -d " "` ++ if ! /sbin/e2fsck -fn ext2.img ; then ++ echo "fsck failed" ++ echo FAILED ++ cleanup ++ exit 1 ++ fi ++ mkdir -p mnt ++ if ! mount -t ext2 -o loop ext2.img mnt; then ++ echo FAILED ++ cleanup ++ exit 1 ++ fi ++ if (! [ -f mnt/file.$fname ]) || \ ++ [ $fname != "`ls -al mnt | grep file.$fname |awk '{print $5}'`" ] ; then ++ echo FAILED ++ cleanup ++ exit 1 ++ fi ++ echo PASSED "(md5 checksum for the image: $md5)" ++ cleanup ++} ++ ++# ftest - Uses the -f spec-file option of genext2fs ++# Creates an image with the devices mentioned in the given spec ++# file and verifies it ++# Usage: ftest spec-file number-of-blocks ++ftest () { ++ fname=$1; blocks=$2; ++ echo "Testing with devices file $fname" ++ ./genext2fs -b $blocks -f $fname ext2.img ++ md5=`md5sum ext2.img | cut -f 1 -d " "` ++ if ! /sbin/e2fsck -fn ext2.img ; then ++ echo "fsck failed" ++ echo FAILED ++ cleanup ++ exit 1 ++ fi ++ mkdir -p mnt ++ if ! mount -t ext2 -o loop ext2.img mnt; then ++ echo FAILED ++ cleanup ++ exit 1 ++ fi ++ if ! [ -d mnt/dev ] ; then ++ echo FAILED ++ cleanup ++ exit 1 ++ fi ++ cat dev.txt | grep ^[bc] | \ ++ awk '{print $1substr($1,2)substr($1,2),$2,$3}'| \ ++ sort -d -k3.6 > fout ++ ls -al mnt/dev | grep ^[bc] | \ ++ awk '{ print $1,$5$6,"/dev/"$10}' | \ ++ sort -d -k3.6 > lsout ++ if ! diff fout lsout ; then ++ echo FAILED ++ cleanup ++ exit 1 ++ fi ++ echo PASSED "(md5 checksum for the image: $md5)" ++ cleanup ++} ++ ++dtest 0 4096 ++dtest 0 8193 ++dtest 0 8194 ++dtest 1 4096 ++dtest 12288 4096 ++dtest 274432 4096 ++dtest 8388608 9000 ++dtest 16777216 20000 ++ ++ftest dev.txt 4096 ++ ++exit 0 +diff -urN genext2fs-1.3.orig/test.sh genext2fs-1.3/test.sh +--- genext2fs-1.3.orig/test.sh 1969-12-31 17:00:00.000000000 -0700 ++++ genext2fs-1.3/test.sh 2003-04-21 01:41:42.000000000 -0600 +@@ -0,0 +1,53 @@ ++#!/bin/sh ++set -e ++ ++# dtest - Uses the -d directory option of genext2fs ++# Creates an image with a file of given size and verifies it ++# Usage: dtest file-size number-of-blocks correct-checksum ++dtest () { ++ size=$1; blocks=$2; checksum=$3 ++ echo "Testing with file of size $size " ++ mkdir -p test ++ cd test ++ dd if=/dev/zero of=file.$1 bs=1 count=$size ++ cd .. ++ ./genext2fs -b $blocks -d test ext2.img ++ md5=`md5sum ext2.img | cut -d" " -f1` ++ rm -rf ext2.img test ++ if [ $md5 == $checksum ] ; then ++ echo PASSED ++ else ++ echo FAILED ++ exit 1 ++ fi ++} ++ ++# ftest - Uses the -f spec-file option of genext2fs ++# Creates an image with the devices mentioned in the given spec ++# file and verifies it ++# Usage: ftest spec-file number-of-blocks correct-checksum ++ftest () { ++ fname=$1; blocks=$2; checksum=$3 ++ echo "Testing with devices file $fname" ++ ./genext2fs -b $blocks -f $fname ext2.img ++ md5=`md5sum ext2.img | cut -d" " -f1` ++ rm -rf ext2.img ++ if [ $md5 == $checksum ] ; then ++ echo PASSED ++ else ++ echo FAILED ++ exit 1 ++ fi ++} ++ ++dtest 0 4096 491a43ab93c2e5c186c9f1f72d88e5c5 ++dtest 0 8193 6289224f0b7f151994479ba156c43505 ++dtest 0 8194 3272c43c25e8d0c3768935861a643a65 ++dtest 1 4096 5ee24486d33af88c63080b09d8cadfb5 ++dtest 12288 4096 494498364defdc27b2770d1f9c1e3387 ++dtest 274432 4096 65c4bd8d30bf563fa5434119a12abff1 ++dtest 8388608 9000 9a49b0461ee236b7fd7c452fb6a1f2dc ++dtest 16777216 20000 91e16429c901b68d30f783263f0611b7 ++ ++ftest dev.txt 4096 921ee9343b0759e16ad8d979d7dd16ec ++exit 0 |