forked from pool/compat-usrmerge
Accepting request 898435 from Base:System
OBS-URL: https://build.opensuse.org/request/show/898435 OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/compat-usrmerge?expand=0&rev=2
This commit is contained in:
Dominique Leuenberger
Git OBS Bridge
commit
a8180cfcec
@ -1,3 +1,30 @@
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-------------------------------------------------------------------
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Tue Jun 8 12:03:52 UTC 2021 - Ludwig Nussel <lnussel@suse.de>
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- early exit in case of overlayfs (boo#1187027)
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-------------------------------------------------------------------
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Tue Jun 8 07:37:33 UTC 2021 - Fabian Vogt <fvogt@suse.com>
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- Avoid dependency on mountpoint from util-linux
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- Also check for availability of find
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-------------------------------------------------------------------
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Mon Jun 7 09:02:56 UTC 2021 - Ludwig Nussel <lnussel@suse.com>
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- fix conversion with split /usr (boo#1186781)
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-------------------------------------------------------------------
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Wed Jun 2 15:29:15 UTC 2021 - Ludwig Nussel <lnussel@suse.com>
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- exit early if one of the affected directories has mountpoint
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beneath it
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-------------------------------------------------------------------
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Tue Jun 1 23:27:08 UTC 2021 - Niklas Haas <obs@haasn.xyz>
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- add fallback for filesystems without renameat2 (boo#1186637)
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-------------------------------------------------------------------
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Thu Mar 25 09:50:48 UTC 2021 - Ludwig Nussel <lnussel@suse.de>
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59
convertfs
59
convertfs
@ -3,28 +3,59 @@
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ROOT=
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is_usrmerged() {
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local r=1
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for dir in bin sbin lib lib64; do
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[ -d "$ROOT/$dir" ] || continue
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[ -L "$ROOT/$dir" ] || return 1
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r=0
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done
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return "$r"
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}
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# check if there's anything to do
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is_usrmerged && exit 0
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# the package is installed with AutoReq off, so no guarantee that
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# coreutils actually works
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if ! (cp --help && mountpoint --help && mountpoint --help) > /dev/null; then
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if ! { cp --help && find --help; } > /dev/null; then
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echo "tools not functional, exit"
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exit 1
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fi
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# clean up after ourselves no matter how we die.
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cleanup() {
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echo "Something failed, cleaning up"
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echo "UsrMerge conversion failed, cleaning up"
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for dir in bin sbin lib lib64; do
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rm -rf -- "$ROOT/usr/${dir}.usrmerge"
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done
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echo "!!! ATTENTION: Do NOT proceed if you see this message during"
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echo "!!! distribution upgrade. Chances are high that your system might"
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echo "!!! break beyond repair if you do."
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}
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trap 'ret=$?; [[ $ret -ne 0 ]] && cleanup;exit $ret;' EXIT
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trap 'exit 1;' SIGINT
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mountpoint -q "$ROOT/usr" || CP_HARDLINK="-l"
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set -e
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if [ "$(stat -f -c %T "${ROOT:-/}")" = "overlayfs" ]; then
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echo "UsrMerge conversion does not work on overlayfs"
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exit 1
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fi
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CP_HARDLINK="-l"
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while read dev mp other; do
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[ "$mp" = "$ROOT/usr" ] && CP_HARDLINK=""
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for dir in bin sbin lib lib64; do
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[ -d "$ROOT/$dir" ] || continue
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if [ "${mp#$ROOT/$dir}" != "$mp" ] || [ "${mp#$ROOT/usr/$dir}" != "$mp" ]; then
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echo "Please unmount $mp before the conversion"
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exit 1
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fi
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done
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done < /proc/mounts
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# merge / and /usr in new dir in /usr
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for dir in bin sbin lib lib64; do
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rm -rf -- "$ROOT/usr/${dir}.usrmerge"
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@ -32,7 +63,7 @@ for dir in bin sbin lib lib64; do
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[[ -d "$ROOT/$dir" ]] || continue
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echo "Make a copy of \`$ROOT/$dir'."
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[[ -d "$ROOT/$dir" ]] \
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&& cp -ax -l "$ROOT/$dir" "$ROOT/usr/${dir}.usrmerge"
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&& cp -ax $CP_HARDLINK "$ROOT/$dir" "$ROOT/usr/${dir}.usrmerge"
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# cp can't handle copying a dir over non-directories. So move
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# those away in advance. Happened with /lib/udev existing as
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# link on older distros
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@ -43,7 +74,7 @@ for dir in bin sbin lib lib64; do
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rm -rf "$f.usrmerge~"
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mv "$f" "$f.usrmerge~"
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fi
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done < <(find "$ROOT/usr/$dir" -type d -printf "%P\n" )
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done < <(find "$ROOT/usr/$dir" -xdev -type d -printf "%P\n" )
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echo "Merge the copy with \`$ROOT/usr/$dir'."
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[[ -d "$ROOT/usr/${dir}.usrmerge" ]] \
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|| mkdir -p "$ROOT/usr/${dir}.usrmerge"
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@ -51,14 +82,14 @@ for dir in bin sbin lib lib64; do
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echo "Clean up duplicates in \`$ROOT/usr/$dir'."
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# delete all symlinks that have been backed up. /usr versions
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# override / ones
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find "$ROOT/usr/${dir}.usrmerge" -type l -name '*.usrmerge~' -delete || :
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find "$ROOT/usr/${dir}.usrmerge" -xdev -type l -name '*.usrmerge~' -delete || :
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# in rare cases the symlinks may point from /usr to /, so remove
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# the link in that case
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while read file; do
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o=${file%%.usrmerge~}
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[ -L "$o" ] && mv -f "$file" "$o"
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done < <(find "$ROOT/usr/${dir}.usrmerge" \
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-name '*.usrmerge~' -type f)
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-xdev -name '*.usrmerge~' -type f)
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done
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# switch over merged dirs in /usr
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for dir in bin sbin lib lib64; do
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@ -72,7 +103,7 @@ done
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for dir in bin sbin lib lib64; do
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if [ ! -L "$ROOT/$dir" -a -d "$ROOT/$dir" ]; then
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echo "Create \`$ROOT/$dir' symlink."
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rm -rf "$ROOT/${dir}.usrmerge" || :
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rm --one-file-system -rf "$ROOT/${dir}.usrmerge" || :
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ln -s usr/$dir "$ROOT/${dir}.usrmerge"
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/usr/libexec/xmv "$ROOT/$dir" "$ROOT/${dir}.usrmerge"
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fi
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@ -88,7 +119,7 @@ for dir in bin sbin lib lib64; do
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if [ -d "$d" ]; then
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echo "$d ..."
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mv "$d" "$d~"
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rm -rf "$d~"
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rm --one-file-system -rf "$d~"
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fi
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done
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done
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@ -105,10 +136,4 @@ done
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set +e
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echo "Run ldconfig."
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ldconfig -r "$ROOT"
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#. $ROOT/etc/selinux/config
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#if [ -n "$(command -v setfiles)" ] && [ "$SELINUX" != "disabled" ] && [ -f /etc/selinux/${SELINUXTYPE}/contexts/files/file_contexts ]; then
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# echo "Fixing SELinux labels"
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# setfiles -r $ROOT -p /etc/selinux/${SELINUXTYPE}/contexts/files/file_contexts $ROOT/sbin $ROOT/bin $ROOT/lib $ROOT/lib64 $ROOT/usr/lib $ROOT/usr/lib64 $ROOT/etc/ld.so.cache $ROOT/var/cache/ldconfig || :
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#fi
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ldconfig -r "$ROOT" || :
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33
xmv.c
33
xmv.c
@ -31,6 +31,7 @@
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#include <errno.h>
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#include <getopt.h>
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#include <fcntl.h>
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#include <limits.h>
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#ifndef RENAME_EXCHANGE
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# define RENAME_EXCHANGE (1 << 1)
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@ -66,10 +67,36 @@ int main(int argc, char** argv)
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if (argc-optind < 2)
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help(argv[0], 1);
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r = syscall (SYS_renameat2, AT_FDCWD, argv[optind], AT_FDCWD, argv[optind+1], RENAME_EXCHANGE);
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const char *source = argv[optind], *target = argv[optind+1];
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r = syscall (SYS_renameat2, AT_FDCWD, source, AT_FDCWD, target, RENAME_EXCHANGE);
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if (r < 0) {
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perror("renameat2");
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return 1;
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if (errno != EINVAL) {
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perror("renameat2");
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return 1;
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}
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// Fallback for systems without renameat2 support
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puts("!!! WARNING: rename2 RENAME_EXCHANGE not supported !!!");
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puts("!!! fallback to unsafe rename !!!");
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char tmp[PATH_MAX];
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r = snprintf(tmp, sizeof(tmp), "%s.XXXXXX", target);
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if (r < 0) {
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perror("asprintf");
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return 1;
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}
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// not intended to be use in /tmp so good enough
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mktemp(tmp);
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r = renameat(AT_FDCWD, target, AT_FDCWD, tmp);
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if (!r)
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r = renameat(AT_FDCWD, source, AT_FDCWD, target);
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if (!r)
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r = renameat(AT_FDCWD, tmp, AT_FDCWD, source);
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if (r < 0) {
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perror("renameat");
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return 1;
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}
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}
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return 0;
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