src/basic/fileio.c

@@ -433,11 +433,6 @@ int read_virtual_file(const char *filename, size_t max_size, char **ret_contents
                         }
 
                         n_retries--;
-                } else if (n_retries > 1) {
-                        /* Files in /proc are generally smaller than the page size so let's start with a page size
-                         * buffer from malloc and only use the max buffer on the final try. */
-                        size = MIN3(page_size() - 1, READ_VIRTUAL_BYTES_MAX, max_size);
-                        n_retries = 1;
                 } else {
                         size = MIN(READ_VIRTUAL_BYTES_MAX, max_size);
                         n_retries = 0;

src/journal/journald-server.c

@@ -1267,14 +1267,11 @@ int server_process_datagram(
         /* We use NAME_MAX space for the SELinux label here. The kernel currently enforces no limit, but
          * according to suggestions from the SELinux people this will change and it will probably be
          * identical to NAME_MAX. For now we use that, but this should be updated one day when the final
-         * limit is known.
-         *
-         * Here, we need to explicitly initialize the buffer with zero, as glibc has a bug in
-         * __convert_scm_timestamps(), which assumes the buffer is initialized. See #20741. */
+         * limit is known. */
         CMSG_BUFFER_TYPE(CMSG_SPACE(sizeof(struct ucred)) +
                          CMSG_SPACE_TIMEVAL +
                          CMSG_SPACE(sizeof(int)) + /* fd */
-                         CMSG_SPACE(NAME_MAX) /* selinux label */) control = {};
+                         CMSG_SPACE(NAME_MAX) /* selinux label */) control;
 
         union sockaddr_union sa = {};
 

src/libsystemd-network/icmp6-util.c

@@ -148,9 +148,8 @@ int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) {
 int icmp6_receive(int fd, void *buffer, size_t size, struct in6_addr *ret_dst,
                   triple_timestamp *ret_timestamp) {
 
-        /* This needs to be initialized with zero. See #20741. */
         CMSG_BUFFER_TYPE(CMSG_SPACE(sizeof(int)) + /* ttl */
-                         CMSG_SPACE_TIMEVAL) control = {};
+                         CMSG_SPACE_TIMEVAL) control;
         struct iovec iov = {};
         union sockaddr_union sa = {};
         struct msghdr msg = {

src/timesync/timesyncd-manager.c

@@ -416,8 +416,7 @@ static int manager_receive_response(sd_event_source *source, int fd, uint32_t re
                 .iov_base = &ntpmsg,
                 .iov_len = sizeof(ntpmsg),
         };
-        /* This needs to be initialized with zero. See #20741. */
-        CMSG_BUFFER_TYPE(CMSG_SPACE_TIMESPEC) control = {};
+        CMSG_BUFFER_TYPE(CMSG_SPACE_TIMESPEC) control;
         union sockaddr_union server_addr;
         struct msghdr msghdr = {
                 .msg_iov = &iov,

test/TEST-64-UDEV-STORAGE/test.sh

@@ -1,13 +1,5 @@
 #!/usr/bin/env bash
 # vi: ts=4 sw=4 tw=0 et:
-#
-# TODO:
-#   * iSCSI
-#   * LVM over iSCSI (?)
-#   * SW raid (mdadm)
-#   * LUKS -> MD (mdadm) -> LVM
-#   * BTRFS
-#   * MD BTRFS
 set -e
 
 TEST_DESCRIPTION="systemd-udev storage tests"
@@ -38,11 +30,6 @@ test_append_files() {
             install_multipath
         fi
 
-        # Configure LVM
-        if command -v lvm; then
-            install_lvm
-        fi
-
         for i in {0..127}; do
             dd if=/dev/zero of="${TESTDIR:?}/disk$i.img" bs=1M count=1
             echo "device$i" >"${TESTDIR:?}/disk$i.img"
@@ -259,31 +246,6 @@ testcase_simultaneous_events() {
     test_run_one "${1:?}"
 }
 
-testcase_lvm_basic() {
-    if ! command -v lvm; then
-        echo "Missing lvm tools, skipping the test..."
-        return 77
-    fi
-
-    local qemu_opts=("-device ahci,id=ahci0")
-    local diskpath
-
-    # Attach 4 SATA disks to the VM (and set their model and serial fields
-    # to something predictable, so we can refer to them later)
-    for i in {0..3}; do
-        diskpath="${TESTDIR:?}/lvmbasic${i}.img"
-        dd if=/dev/zero of="$diskpath" bs=1M count=32
-        qemu_opts+=(
-            "-device ide-hd,bus=ahci0.$i,drive=drive$i,model=foobar,serial=deadbeeflvm$i"
-            "-drive format=raw,cache=unsafe,file=$diskpath,if=none,id=drive$i"
-        )
-    done
-
-    KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
-    QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
-    test_run_one "${1:?}"
-}
-
 # Allow overriding which tests should be run from the "outside", useful for manual
 # testing (make -C test/... TESTCASES="testcase1 testcase2")
 if [[ -v "TESTCASES" && -n "$TESTCASES" ]]; then

test/test-functions

@@ -410,7 +410,7 @@ run_qemu() {
     fi
 
     kernel_params+=(
-        "root=LABEL=systemd_boot"
+        "root=/dev/sda1"
         "rw"
         "raid=noautodetect"
         "rd.luks=0"
@@ -896,7 +896,6 @@ install_modules() {
 install_dmevent() {
     instmods dm_crypt =crypto
     inst_binary dmeventd
-    image_install "${ROOTLIBDIR:?}"/system/dm-event.{service,socket}
     if get_bool "$LOOKS_LIKE_DEBIAN"; then
         # dmsetup installs 55-dm and 60-persistent-storage-dm on Debian/Ubuntu
         # and since buster/bionic 95-dm-notify.rules
@@ -936,20 +935,6 @@ install_multipath() {
     fi
 }
 
-install_lvm() {
-    image_install lvm
-    image_install "${ROOTLIBDIR:?}"/system/lvm2-lvmpolld.{service,socket}
-    image_install "${ROOTLIBDIR:?}"/system/{blk-availability,lvm2-monitor,lvm2-pvscan@}.service
-    image_install "${ROOTLIBDIR:?}"/system-generators/lvm2-activation-generator
-    image_install -o "/lib/tmpfiles.d/lvm2.conf"
-    if get_bool "$LOOKS_LIKE_DEBIAN"; then
-        inst_rules 56-lvm.rules 69-lvm-metad.rules
-    else
-        inst_rules 11-dm-lvm.rules 69-dm-lvm-metad.rules
-    fi
-    mkdir -p "${initdir:?}/etc/lvm"
-}
-
 install_compiled_systemd() {
     dinfo "Install compiled systemd"
 
@@ -1135,9 +1120,9 @@ EOF
 
     udevadm settle
 
-    local label=(-L systemd_boot)
+    local label=(-L systemd)
     # mkfs.reiserfs doesn't know -L. so, use --label instead
-    [[ "$FSTYPE" == "reiserfs" ]] && label=(--label systemd_boot)
+    [[ "$FSTYPE" == "reiserfs" ]] && label=(--label systemd)
     if ! mkfs -t "${FSTYPE}" "${label[@]}" "${LOOPDEV}p1" -q; then
         dfatal "Failed to mkfs -t ${FSTYPE}"
         exit 1

test/units/testsuite-17.01.sh

@@ -6,7 +6,7 @@ mkdir -p /run/udev/rules.d/
 
 rm -f /run/udev/rules.d/50-testsuite.rules
 udevadm control --reload
-udevadm trigger --settle /dev/sda
+udevadm trigger /dev/sda
 
 while : ; do
     (
@@ -24,7 +24,7 @@ SUBSYSTEM=="block", KERNEL=="sda", OPTIONS="log_level=debug"
 ACTION!="remove", SUBSYSTEM=="block", KERNEL=="sda", ENV{SYSTEMD_WANTS}="foobar.service"
 EOF
 udevadm control --reload
-udevadm trigger --settle /dev/sda
+udevadm trigger /dev/sda
 
 while : ; do
     (
@@ -42,7 +42,7 @@ SUBSYSTEM=="block", KERNEL=="sda", OPTIONS="log_level=debug"
 ACTION!="remove", SUBSYSTEM=="block", KERNEL=="sda", ENV{SYSTEMD_WANTS}="waldo.service"
 EOF
 udevadm control --reload
-udevadm trigger --settle /dev/sda
+udevadm trigger /dev/sda
 
 while : ; do
     (
@@ -58,7 +58,7 @@ done
 rm /run/udev/rules.d/50-testsuite.rules
 
 udevadm control --reload
-udevadm trigger --settle /dev/sda
+udevadm trigger /dev/sda
 
 while : ; do
     (

test/units/testsuite-17.03.sh

@@ -8,10 +8,10 @@ setup() {
     mkdir -p "${test_rule%/*}"
     cp -f /etc/udev/udev.conf /etc/udev/udev.conf.bckp
     cat >"${test_rule}" <<EOF
-ACTION=="add", SUBSYSTEM=="mem", KERNEL=="null", OPTIONS="log_level=debug"
-ACTION=="add", SUBSYSTEM=="mem", KERNEL=="null", PROGRAM=="/bin/sleep 60"
+SUBSYSTEM=="net", KERNEL=="lo", OPTIONS="log_level=debug"
+SUBSYSTEM=="net", KERNEL=="lo", PROGRAM=="/bin/sleep 60"
 EOF
-    echo "event_timeout=10" >>/etc/udev/udev.conf
+    echo "event_timeout=30" >>/etc/udev/udev.conf
     echo "timeout_signal=SIGABRT" >>/etc/udev/udev.conf
 
     systemctl restart systemd-udevd.service
@@ -28,13 +28,13 @@ teardown() {
 run_test() {
     since="$(date +%T)"
 
-    udevadm trigger -w --action add /dev/null
+    echo add >/sys/class/net/lo/uevent
 
     for _ in {1..20}; do
+        sleep 5
         if coredumpctl --since "$since" --no-legend --no-pager | grep /bin/udevadm ; then
             return 0
         fi
-        sleep .5
     done
 
     return 1

test/units/testsuite-17.04.sh

@@ -15,34 +15,42 @@ ACTION=="change", SUBSYSTEM=="mem", KERNEL=="null", TAG+="changed"
 EOF
 
 udevadm control --reload
-udevadm trigger --settle --action add /dev/null
+udevadm trigger -c add /dev/null
 
-test -f /run/udev/tags/added/c1:3
-test ! -f /run/udev/tags/changed/c1:3
-udevadm info /dev/null | grep -q 'E: TAGS=.*:added:.*'
-udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:added:.*'
-udevadm info /dev/null | grep -q 'E: TAGS=.*:changed:.*' && { echo 'unexpected TAGS='; exit 1; }
-udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:changed:.*' && { echo 'unexpected CURRENT_TAGS='; exit 1; }
+while   test ! -f /run/udev/tags/added/c1:3 ||
+        test -f /run/udev/tags/changed/c1:3 ||
+        ! udevadm info /dev/null | grep -q 'E: TAGS=.*:added:.*' ||
+        ! udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:added:.*' ||
+        udevadm info /dev/null | grep -q 'E: TAGS=.*:changed:.*' ||
+        udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:changed:.*'
+do
+    sleep .5
+done
 
-udevadm trigger --settle --action change /dev/null
-
-test -f /run/udev/tags/added/c1:3
-test -f /run/udev/tags/changed/c1:3
-udevadm info /dev/null | grep -q 'E: TAGS=.*:added:.*'
-udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:added:.*' && { echo 'unexpected CURRENT_TAGS='; exit 1; }
-udevadm info /dev/null | grep -q 'E: TAGS=.*:changed:.*'
-udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:changed:.*'
-
-udevadm trigger --settle --action add /dev/null
-
-test -f /run/udev/tags/added/c1:3
-test -f /run/udev/tags/changed/c1:3
-udevadm info /dev/null | grep -q 'E: TAGS=.*:added:.*'
-udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:added:.*'
-udevadm info /dev/null | grep -q 'E: TAGS=.*:changed:.*'
-udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:changed:.*' && { echo 'unexpected CURRENT_TAGS='; exit 1; }
-
-rm /run/udev/rules.d/50-testsuite.rules
 udevadm control --reload
+udevadm trigger -c change /dev/null
+
+while   test ! -f /run/udev/tags/added/c1:3 ||
+        test ! -f /run/udev/tags/changed/c1:3 ||
+        ! udevadm info /dev/null | grep -q 'E: TAGS=.*:added:.*' ||
+        udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:added:.*' ||
+        ! udevadm info /dev/null | grep -q 'E: TAGS=.*:changed:.*' ||
+        ! udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:changed:.*'
+do
+    sleep .5
+done
+
+udevadm control --reload
+udevadm trigger -c add /dev/null
+
+while   test ! -f /run/udev/tags/added/c1:3 ||
+        test ! -f /run/udev/tags/changed/c1:3 ||
+        ! udevadm info /dev/null | grep -q 'E: TAGS=.*:added:.*' ||
+        ! udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:added:.*' ||
+        ! udevadm info /dev/null | grep -q 'E: TAGS=.*:changed:.*' ||
+        udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:changed:.*'
+do
+    sleep .5
+done
 
 exit 0

test/units/testsuite-17.05.sh

@@ -10,13 +10,15 @@ ACTION=="add", SUBSYSTEM=="mem", KERNEL=="null", IMPORT{program}="/bin/echo -e H
 EOF
 
 udevadm control --reload
-udevadm trigger --settle --action add /dev/null
+udevadm trigger -c add /dev/null
 
-test -f /run/udev/data/c1:3
-udevadm info /dev/null | grep -q 'E: HOGE=aa\\x20\\x20\\x20bb'
-udevadm info /dev/null | grep -q 'E: FOO=\\x20aaa\\x20'
+while : ; do
+    test -f /run/udev/data/c1:3 &&
+        udevadm info /dev/null | grep -q 'E: HOGE=aa\\x20\\x20\\x20bb' &&
+        udevadm info /dev/null | grep -q 'E: FOO=\\x20aaa\\x20' &&
+        break
 
-rm /run/udev/rules.d/50-testsuite.rules
-udevadm control --reload
+    sleep .5
+done
 
 exit 0

test/units/testsuite-17.06.sh

@@ -21,15 +21,20 @@ function check() {
         systemctl restart systemd-udevd.service
         udevadm control --ping
         udevadm settle
+        sleep 1
         check_validity
 
         for ((j=0;j<2;j++)); do
             udevadm trigger -w --action add --subsystem-match=block
+            udevadm settle
+            sleep 1
             check_validity
         done
 
         for ((j=0;j<2;j++)); do
             udevadm trigger -w --action change --subsystem-match=block
+            udevadm settle
+            sleep 1
             check_validity
         done
     done
@@ -65,5 +70,6 @@ rm /run/udev/rules.d/00-debug.rules
 rm /run/udev/rules.d/50-testsuite.rules
 
 udevadm control --reload
+udevadm trigger -w --action add --subsystem-match=block
 
 exit 0

test/units/testsuite-64.sh

@@ -5,27 +5,11 @@ set -eux
 set -o pipefail
 
 # Check if all symlinks under /dev/disk/ are valid
-# shellcheck disable=SC2120
 helper_check_device_symlinks() {
-    # Disable verbose logging only for this function (and reset the signal handler
-    # when leaving the function)
-    set +x; trap "trap - RETURN; set -x" RETURN
-
-    local dev link path paths target
-
-    [[ $# -gt 0 ]] && paths=("$@") || paths=("/dev/disk")
-
-    # Check if all given paths are valid
-    for path in "${paths[@]}"; do
-        if ! test -e "$path"; then
-            echo >&2 "Path '$path' doesn't exist"
-            return 1
-        fi
-    done
+    local dev link target
 
     while read -r link; do
         target="$(readlink -f "$link")"
-        echo "$link -> $target"
         # Both checks should do virtually the same thing, but check both to be
         # on the safe side
         if [[ ! -e "$link" || ! -e "$target" ]]; then
@@ -39,7 +23,7 @@ helper_check_device_symlinks() {
             echo >&2 "ERROR: symlink '$link' points to '$target' but '$dev' was expected"
             return 1
         fi
-    done < <(find "${paths[@]}" -type l)
+    done < <(find /dev/disk -type l)
 }
 
 testcase_megasas2_basic() {
@@ -193,92 +177,6 @@ EOF
     rm -f "$partscript"
 }
 
-testcase_lvm_basic() {
-    local i part
-    local vgroup="MyTestGroup$RANDOM"
-    local devices=(
-        /dev/disk/by-id/ata-foobar_deadbeeflvm{0..3}
-    )
-
-    # Make sure all the necessary soon-to-be-LVM devices exist
-    ls -l "${devices[@]}"
-
-    # Add all test devices into a volume group, create two logical volumes,
-    # and check if necessary symlinks exist (and are valid)
-    lvm pvcreate -y "${devices[@]}"
-    lvm pvs
-    lvm vgcreate "$vgroup" -y "${devices[@]}"
-    lvm vgs
-    lvm vgchange -ay "$vgroup"
-    lvm lvcreate -y -L 4M "$vgroup" -n mypart1
-    lvm lvcreate -y -L 8M "$vgroup" -n mypart2
-    lvm lvs
-    udevadm settle
-    test -e "/dev/$vgroup/mypart1"
-    test -e "/dev/$vgroup/mypart2"
-    mkfs.ext4 -L mylvpart1 "/dev/$vgroup/mypart1"
-    udevadm settle
-    test -e "/dev/disk/by-label/mylvpart1"
-    helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
-
-    # Disable the VG and check symlinks...
-    lvm vgchange -an "$vgroup"
-    udevadm settle
-    test ! -e "/dev/$vgroup"
-    test ! -e "/dev/disk/by-label/mylvpart1"
-    helper_check_device_symlinks "/dev/disk"
-
-    # reenable the VG and check the symlinks again if all LVs are properly activated
-    lvm vgchange -ay "$vgroup"
-    udevadm settle
-    test -e "/dev/$vgroup/mypart1"
-    test -e "/dev/$vgroup/mypart2"
-    test -e "/dev/disk/by-label/mylvpart1"
-    helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
-
-    # Same as above, but now with more "stress"
-    for i in {1..100}; do
-        lvm vgchange -an "$vgroup"
-        lvm vgchange -ay "$vgroup"
-
-        if ((i % 10 == 0)); then
-            udevadm settle
-            test -e "/dev/$vgroup/mypart1"
-            test -e "/dev/$vgroup/mypart2"
-            test -e "/dev/disk/by-label/mylvpart1"
-            helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
-        fi
-    done
-
-    # Remove the first LV
-    lvm lvremove -y "$vgroup/mypart1"
-    udevadm settle
-    test ! -e "/dev/$vgroup/mypart1"
-    test -e "/dev/$vgroup/mypart2"
-    helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
-
-    # Create & remove LVs in a loop, i.e. with more "stress"
-    for i in {1..50}; do
-        # 1) Create 16 logical volumes
-        for part in {0..15}; do
-            lvm lvcreate -y -L 4M "$vgroup" -n "looppart$part"
-        done
-
-        # 2) Immediately remove them
-        lvm lvremove -y "$vgroup"/looppart{0..15}
-
-        # 3) On every 10th iteration settle udev and check if all partitions are
-        #    indeed gone, and if all symlinks are still valid
-        if ((i % 10 == 0)); then
-            udevadm settle
-            for part in {0..15}; do
-                test ! -e "/dev/$vgroup/looppart$part"
-            done
-            helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
-        fi
-    done
-}
-
 : >/failed
 
 udevadm settle