mirror of https://github.com/vitalif/e2fsprogs
Revamp the initrd scripts to use a new helper program,
e2initrd_helper, which obviates the need for using /bin/awk and mounting/unmounting the root filesystem during the initrd process. (Addresses Debian Bug #247775)bitmap-optimize
Theodore Ts'o
parent
414846b126
commit
5d40773ba8
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@ -1,3 +1,9 @@
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2004-09-18 Theodore Ts'o <tytso@mit.edu>
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* configure.in: Add --disable-e2initrd-helper flag to control
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whether or not e2initrd_helper program should be
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built/installed.
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2004-09-17 Theodore Ts'o <tytso@mit.edu>
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* Makefile.in: Remove XSI:isms for greater portability.
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19
configure.in
19
configure.in
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@ -531,6 +531,25 @@ esac]
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AC_SUBST(FSCK_PROG)
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AC_SUBST(FSCK_MAN)
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dnl
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dnl See whether to install the `e2initrd-helper' program
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dnl
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AC_ARG_ENABLE([e2initrd-helper],
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[ --enable-e2initrd-helper build e2initrd-helper program],
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[if test "$enableval" = "no"
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then
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E2INITRD_PROG='' E2INITRD_MAN=''
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echo "Not building e2initrd helper"
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else
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E2INITRD_PROG=e2initrd_helper E2INITRD_MAN=e2initrd_helper.8
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echo "Building e2initrd helper"
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fi]
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,
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E2INITRD_PROG=e2initrd_helper E2INITRD_MAN=e2initrd_helper.8
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echo "Building e2initrd helper by default"
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)
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AC_SUBST(E2INITRD_PROG)
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AC_SUBST(E2INITRD_MAN)
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dnl
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dnl
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MAKEFILE_LIBRARY=$srcdir/lib/Makefile.library
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AC_SUBST_FILE(MAKEFILE_LIBRARY)
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@ -1,3 +1,27 @@
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e2fsprogs (1.35-7) unstable; urgency=low
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* Change the initrd scripts to be use a helper program which avoids
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needing to mount the root filesystem and use awk to query the
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/etc/fstab file. (Closes: #247775)
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* Add support for the ocfs2 filesystem to the blkid library.
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* Various portability fixes for Hurd and FreeBsd, as well as
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removing XSI:isms. (Closes: #256669, #264630, #269044, #255589)
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* Update config.guess and config.sub from the FSF.
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* Minor manual page clarifications (Closes: #268148)
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* Fix write ordering problems to make e2fsck more robust in the face
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of system crashes while replaying the journal, etc.
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* Fix debugging printf in resize2fs. (Closes: #271605)
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* Add debugfs -d option to use a separate source of data blocks when
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reading from an e2image file.
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* Add e2image -I option which allows the e2image metadata to be
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installed into a filesystem.
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* Change e2fsck to accept directories greater than 32MB.
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* Add test_io mechanisms to abort after reading or writing to a
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particular block.
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* Fix blkid file descriptor and memory leak.
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-- Theodore Y. Ts'o <tytso@mit.edu> Sat, 18 Sep 2004 09:58:46 -0400
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e2fsprogs (1.35-6) unstable; urgency=low
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* In the mkinitrd script, make sure the directories exist before
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@ -1,32 +0,0 @@
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#!/bin/sh
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cd /
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mount -nt proc proc proc
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rootdev=$(cat proc/sys/kernel/real-root-dev)
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cmdline=$(cat /proc/cmdline)
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umount -n proc
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if [ $rootdev != 256 ]; then
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mount -nt tmpfs tmpfs /dev2
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mount -nt proc proc /proc
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mount -nt devfs devfs /devfs > /dev/null 2>&1
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get_device
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mount_device
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if test -f /mnt/etc/fstab ; then
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ext3root=`awk '!/^ *#/ { if (($2 == "/") && ($3 == "ext3")) {print $1;}}' < /mnt/etc/fstab`
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ext2root=`awk '!/^ *#/ { if (($2 == "/") && ($3 == "ext2")) {print $1;}}' < /mnt/etc/fstab`
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fi
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umount -n /devfs > /dev/null 2>&1
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umount -n /mnt > /dev/null 2>&1
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if test -n "$ext3root" || test -n "$ext2root" ; then
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mount -nt tmpfs tmpfs /etc
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echo >> /etc/fstab
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echo >> /etc/mtab
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if test -n "$ext3root" ; then
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/sbin/tune2fs -O has_journal /dev2/root2 > /dev/null 2>&1
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else
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/sbin/tune2fs -O ^has_journal /dev2/root2 > /dev/null 2>&1
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fi
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umount -n /etc
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fi
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umount -n /dev2
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umount -n /proc > /dev/null 2>&1
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fi
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@ -1,8 +1,11 @@
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#!/bin/sh
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#
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# /usr/share/initrd-tools/scripts/e2fsprogs
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#
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cp /usr/share/e2fsprogs/initrd.ext3-add-journal \
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$INITRDDIR/scripts/ext3-add-journal.sh
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cp /sbin/tune2fs $INITRDDIR/sbin
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cp /usr/bin/awk $INITRDDIR/bin/awk
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cp /usr/lib/e2initrd_helper $INITRDDIR/bin/e2initrd_helper
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case "$VERSION" in
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2.4.*)
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@ -0,0 +1,27 @@
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#!/bin/sh
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#
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# /usr/share/e2fsprogs/initrd.ext3-add-journal
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#
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cd /
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mount -nt proc proc proc
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rootdev=$(cat proc/sys/kernel/real-root-dev)
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cmdline=$(cat /proc/cmdline)
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umount -n proc
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if [ $rootdev != 256 ]; then
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mount -nt tmpfs tmpfs /dev2
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get_device
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roottype=`/bin/e2initrd_helper -r /dev2/root2`
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if test -n "$roottype" ; then
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mount -nt tmpfs tmpfs /etc
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echo >> /etc/fstab
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echo >> /etc/mtab
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if test "$roottype" = "ext3" ; then
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/sbin/tune2fs -O has_journal /dev2/root2 > /dev/null 2>&1
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else
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/sbin/tune2fs -O ^has_journal /dev2/root2 > /dev/null 2>&1
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fi
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umount -n /etc
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fi
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umount -n /dev2
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umount -n /proc > /dev/null 2>&1
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fi
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@ -91,7 +91,7 @@ STD_CONF_FLAGS = --with-ccopts="${CCOPTS}" --enable-compression
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BF_CONF_FLAGS = --with-ccopts="${CCOPTS} ${BF_CCOPTS}" \
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--disable-nls --disable-swapfs --disable-imager \
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--disable-resizer --disable-debugfs
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--disable-resizer --disable-debugfs --disable-e2initrd-helper
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MIPS_NOPIC_CONF_FLAGS = --with-ccopts="${CCOPTS}" \
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--disable-nls \
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@ -263,12 +263,12 @@ binary-arch: install install-udeb
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# mkinitrd script
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mkdir -p debian/e2fsprogs/usr/share/initrd-tools/scripts
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install -m755 debian/e2fsprogs.mkinitrd \
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install -m755 debian/initrd-tools.e2fsprogs \
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debian/e2fsprogs/usr/share/initrd-tools/scripts/e2fsprogs
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# initrd script
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mkdir -p debian/e2fsprogs/usr/share/e2fsprogs
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install -m755 debian/e2fsprogs.initrd \
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install -m755 debian/initrd.ext3-add-journal \
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debian/e2fsprogs/usr/share/e2fsprogs/initrd.ext3-add-journal
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@ -1,3 +1,10 @@
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2004-09-18 Theodore Ts'o <tytso@mit.edu>
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* e2initrd_helper.c: New program which allows initrd scripts to
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check on the contents of /etc/fstab without (a) needing to
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mount the root filesystem, and (b) needing /bin/awk in the
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initrd environment. (Addresses Debian Bug #247775)
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2004-09-17 Theodore Ts'o <tytso@mit.edu>
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* tune2fs.8.in: Mention that e2fsck -D might be useful after
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@ -24,6 +24,8 @@ SMANPAGES= tune2fs.8 mklost+found.8 mke2fs.8 dumpe2fs.8 badblocks.8 \
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UPROGS= chattr lsattr uuidgen
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UMANPAGES= chattr.1 lsattr.1 uuidgen.1
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LPROGS= @E2INITRD_PROG@
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TUNE2FS_OBJS= tune2fs.o util.o
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MKLPF_OBJS= mklost+found.o
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MKE2FS_OBJS= mke2fs.o util.o
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@ -58,11 +60,15 @@ DEPLIBS_E2P= $(LIBE2P) $(LIBCOM_ERR)
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.c.o:
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$(CC) -c $(ALL_CFLAGS) $< -o $@
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all:: $(SPROGS) $(UPROGS) $(USPROGS) $(SMANPAGES) $(UMANPAGES)
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all:: $(SPROGS) $(UPROGS) $(USPROGS) $(SMANPAGES) $(UMANPAGES) $(LPROGS)
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findsuper: findsuper.o
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$(CC) $(ALL_LDFLAGS) -o findsuper findsuper.o
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e2initrd_helper: e2initrd_helper.o $(DEPLIBS) $(DEPLIBS_E2P) $(DEPLIBS_BLKID)
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$(CC) $(ALL_LDFLAGS) -o e2initrd_helper e2initrd_helper.o $(LIBS) \
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$(LIBS_BLKID) $(LIBS_E2P) $(LIBINTL)
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tune2fs: $(TUNE2FS_OBJS) $(DEPLIBS) $(DEPLIBS_E2P) $(DEPLIBS_BLKID)
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$(CC) $(ALL_LDFLAGS) -o tune2fs $(TUNE2FS_OBJS) $(LIBS) \
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$(LIBS_BLKID) $(LIBS_E2P) $(LIBINTL)
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@ -195,6 +201,10 @@ install: all $(SMANPAGES) $(UMANPAGES) installdirs
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$(INSTALL_PROGRAM) $$i $(DESTDIR)$(bindir)/$$i; \
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$(STRIP) $(DESTDIR)$(bindir)/$$i; \
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done
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for i in $(LPROGS); do \
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$(INSTALL_PROGRAM) $$i $(DESTDIR)$(libdir)/$$i; \
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$(STRIP) $(DESTDIR)$(libdir)/$$i; \
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done
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for i in $(SMANPAGES); do \
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for j in $(COMPRESS_EXT); do \
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$(RM) -f $(DESTDIR)$(man8dir)/$$i.$$j; \
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@ -0,0 +1,392 @@
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/*
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* e2initrd_helper.c - Get the filesystem table
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*
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* Copyright 2004 by Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <time.h>
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <utime.h>
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#else
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extern int optind;
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extern char *optarg;
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#endif
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#include "ext2fs/ext2_fs.h"
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#include "ext2fs/ext2fs.h"
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#include "e2p/e2p.h"
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#include "blkid/blkid.h"
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#include "../version.h"
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#include "nls-enable.h"
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const char * program_name = "get_fstab";
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char * device_name;
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static int open_flag;
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static int root_type;
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static blkid_cache cache = NULL;
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struct mem_file {
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char *buf;
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int size;
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int ptr;
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};
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struct fs_info {
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char *device;
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char *mountpt;
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char *type;
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char *opts;
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int freq;
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int passno;
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int flags;
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struct fs_info *next;
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};
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static void usage(void)
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{
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fprintf(stderr,
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_("Usage: %s -r device\n"), program_name);
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exit (1);
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}
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errcode_t get_file(ext2_filsys fs, const char * filename,
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struct mem_file *ret_file)
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{
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errcode_t retval;
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char *buf;
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ext2_file_t e2_file;
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int nbytes;
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unsigned int got;
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struct ext2_inode inode;
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ext2_ino_t ino;
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ret_file->buf = 0;
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ret_file->size = 0;
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ret_file->ptr = 0;
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retval = ext2fs_namei(fs, EXT2_ROOT_INO, EXT2_ROOT_INO,
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filename, &ino);
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if (retval)
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return retval;
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retval = ext2fs_read_inode(fs, ino, &inode);
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if (retval)
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return retval;
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if (inode.i_size_high || (inode.i_size > 65536))
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return EFBIG;
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buf = malloc(inode.i_size + 1);
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if (!buf)
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return ENOMEM;
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memset(buf, 0, inode.i_size+1);
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retval = ext2fs_file_open(fs, ino, 0, &e2_file);
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if (retval)
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return retval;
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retval = ext2fs_file_read(e2_file, buf, inode.i_size, &got);
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if (retval)
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goto errout;
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retval = ext2fs_file_close(e2_file);
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if (retval)
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return retval;
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ret_file->buf = buf;
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ret_file->size = (int) got;
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errout:
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ext2fs_file_close(e2_file);
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return retval;
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}
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char *get_line(struct mem_file *file)
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{
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char *cp, *ret;
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int s = 0;
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cp = file->buf + file->ptr;
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while (*cp && *cp != '\n') {
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cp++;
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s++;
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}
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ret = malloc(s+1);
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if (!ret)
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return 0;
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ret[s]=0;
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memcpy(ret, file->buf + file->ptr, s);
|
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while (*cp && (*cp == '\n' || *cp == '\r')) {
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cp++;
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s++;
|
||||
}
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file->ptr += s;
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return ret;
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||||
}
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|
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int mem_file_eof(struct mem_file *file)
|
||||
{
|
||||
return (file->ptr >= file->size);
|
||||
}
|
||||
|
||||
/*
|
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* fstab parsing code
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*/
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static char *string_copy(const char *s)
|
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{
|
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char *ret;
|
||||
|
||||
if (!s)
|
||||
return 0;
|
||||
ret = malloc(strlen(s)+1);
|
||||
if (ret)
|
||||
strcpy(ret, s);
|
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return ret;
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||||
}
|
||||
|
||||
static char *skip_over_blank(char *cp)
|
||||
{
|
||||
while (*cp && isspace(*cp))
|
||||
cp++;
|
||||
return cp;
|
||||
}
|
||||
|
||||
static char *skip_over_word(char *cp)
|
||||
{
|
||||
while (*cp && !isspace(*cp))
|
||||
cp++;
|
||||
return cp;
|
||||
}
|
||||
|
||||
static char *parse_word(char **buf)
|
||||
{
|
||||
char *word, *next;
|
||||
|
||||
word = *buf;
|
||||
if (*word == 0)
|
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return 0;
|
||||
|
||||
word = skip_over_blank(word);
|
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next = skip_over_word(word);
|
||||
if (*next)
|
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*next++ = 0;
|
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*buf = next;
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return word;
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||||
}
|
||||
|
||||
static void parse_escape(char *word)
|
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{
|
||||
char *p, *q;
|
||||
int ac, i;
|
||||
|
||||
if (!word)
|
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return;
|
||||
|
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for (p = word, q = word; *p; p++, q++) {
|
||||
*q = *p;
|
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if (*p != '\\')
|
||||
continue;
|
||||
if (*++p == 0)
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break;
|
||||
if (*p == 't') {
|
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*q = '\t';
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||||
continue;
|
||||
}
|
||||
if (*p == 'n') {
|
||||
*q = '\n';
|
||||
continue;
|
||||
}
|
||||
if (!isdigit(*p)) {
|
||||
*q = *p;
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||||
continue;
|
||||
}
|
||||
ac = 0;
|
||||
for (i = 0; i < 3; i++, p++) {
|
||||
if (!isdigit(*p))
|
||||
break;
|
||||
ac = (ac * 8) + (*p - '0');
|
||||
}
|
||||
*q = ac;
|
||||
p--;
|
||||
}
|
||||
*q = 0;
|
||||
}
|
||||
|
||||
static int parse_fstab_line(char *line, struct fs_info *fs)
|
||||
{
|
||||
char *dev, *device, *mntpnt, *type, *opts, *freq, *passno, *cp;
|
||||
|
||||
if ((cp = strchr(line, '#')))
|
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*cp = 0; /* Ignore everything after the comment char */
|
||||
cp = line;
|
||||
|
||||
device = parse_word(&cp);
|
||||
mntpnt = parse_word(&cp);
|
||||
type = parse_word(&cp);
|
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opts = parse_word(&cp);
|
||||
freq = parse_word(&cp);
|
||||
passno = parse_word(&cp);
|
||||
|
||||
if (!device)
|
||||
return -1; /* Allow blank lines */
|
||||
|
||||
if (!mntpnt || !type)
|
||||
return -1;
|
||||
|
||||
parse_escape(device);
|
||||
parse_escape(mntpnt);
|
||||
parse_escape(type);
|
||||
parse_escape(opts);
|
||||
parse_escape(freq);
|
||||
parse_escape(passno);
|
||||
|
||||
dev = blkid_get_devname(cache, device, NULL);
|
||||
if (dev)
|
||||
device = dev;
|
||||
|
||||
if (strchr(type, ','))
|
||||
type = 0;
|
||||
|
||||
fs->device = string_copy(device);
|
||||
fs->mountpt = string_copy(mntpnt);
|
||||
fs->type = string_copy(type);
|
||||
fs->opts = string_copy(opts ? opts : "");
|
||||
fs->freq = freq ? atoi(freq) : -1;
|
||||
fs->passno = passno ? atoi(passno) : -1;
|
||||
fs->flags = 0;
|
||||
fs->next = NULL;
|
||||
|
||||
if (dev)
|
||||
free(dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void free_fstab_line(struct fs_info *fs)
|
||||
{
|
||||
if (fs->device)
|
||||
fs->device = 0;
|
||||
if (fs->mountpt)
|
||||
fs->mountpt = 0;
|
||||
if (fs->type)
|
||||
fs->type = 0;
|
||||
if (fs->opts)
|
||||
fs->opts = 0;
|
||||
memset(fs, 0, sizeof(struct fs_info));
|
||||
}
|
||||
|
||||
|
||||
static void PRS(int argc, char **argv)
|
||||
{
|
||||
int c;
|
||||
char * tmp;
|
||||
struct group * gr;
|
||||
struct passwd * pw;
|
||||
|
||||
#ifdef ENABLE_NLS
|
||||
setlocale(LC_MESSAGES, "");
|
||||
setlocale(LC_CTYPE, "");
|
||||
bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
|
||||
textdomain(NLS_CAT_NAME);
|
||||
#endif
|
||||
|
||||
while ((c = getopt(argc, argv, "rv")) != EOF) {
|
||||
switch (c) {
|
||||
case 'r':
|
||||
root_type++;
|
||||
break;
|
||||
|
||||
case 'v':
|
||||
printf("%s %s (%s)\n", program_name,
|
||||
E2FSPROGS_VERSION, E2FSPROGS_DATE);
|
||||
break;
|
||||
default:
|
||||
usage();
|
||||
}
|
||||
}
|
||||
if (optind < argc - 1 || optind == argc)
|
||||
usage();
|
||||
device_name = blkid_get_devname(NULL, argv[optind], NULL);
|
||||
if (!device_name) {
|
||||
com_err("tune2fs", 0, _("Unable to resolve '%s'"),
|
||||
argv[optind]);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
void get_root_type(ext2_filsys fs)
|
||||
{
|
||||
errcode_t retval;
|
||||
struct mem_file file;
|
||||
char *buf;
|
||||
struct fs_info fs_info;
|
||||
int ret;
|
||||
|
||||
retval = get_file(fs, "/etc/fstab", &file);
|
||||
|
||||
while (!mem_file_eof(&file)) {
|
||||
buf = get_line(&file);
|
||||
if (!buf)
|
||||
continue;
|
||||
|
||||
ret = parse_fstab_line(buf, &fs_info);
|
||||
if (ret < 0)
|
||||
goto next_line;
|
||||
|
||||
if (!strcmp(fs_info.mountpt, "/"))
|
||||
printf("%s\n", fs_info.type);
|
||||
|
||||
free_fstab_line(&fs_info);
|
||||
|
||||
next_line:
|
||||
free(buf);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int main (int argc, char ** argv)
|
||||
{
|
||||
errcode_t retval;
|
||||
ext2_filsys fs;
|
||||
struct ext2_super_block *sb;
|
||||
io_manager io_ptr;
|
||||
int got, ret;
|
||||
|
||||
initialize_ext2_error_table();
|
||||
|
||||
blkid_get_cache(&cache, NULL);
|
||||
PRS(argc, argv);
|
||||
|
||||
#ifdef CONFIG_TESTIO_DEBUG
|
||||
io_ptr = test_io_manager;
|
||||
test_io_backing_manager = unix_io_manager;
|
||||
#else
|
||||
io_ptr = unix_io_manager;
|
||||
#endif
|
||||
retval = ext2fs_open (device_name, open_flag, 0, 0, io_ptr, &fs);
|
||||
if (retval)
|
||||
exit(1);
|
||||
|
||||
if (root_type)
|
||||
get_root_type(fs);
|
||||
|
||||
return (ext2fs_close (fs) ? 1 : 0);
|
||||
}
|
||||
Loading…
Reference in New Issue