Merge a050031d05 into 5bed97dd57

key-data might be NULL. Fixes crash:

0  0x0000559c62120530 in attach_luks_or_plain_or_bitlk (cd=0x559c6b192830, name=0x7ffd57981dc4 "root", token_type=TOKEN_FIDO2, key_file=0x0, key_data=0x0, passwords=0x0, flags=524296, until=0)
    at ../src/cryptsetup/cryptsetup.c:2234
        pass_volume_key = false
        r = 1469577760
        __func__ = '\000' <repeats 29 times>
1  0x0000559c6212279c in run (argc=6, argv=0x7ffd5797fe98) at ../src/cryptsetup/cryptsetup.c:2597
        discovered_key_data = {iov_base = 0x0, iov_len = 0}
        key_data = 0x0
        token_type = TOKEN_FIDO2
        destroy_key_file = 0x0
        flags = 524296
        until = 0
        passphrase_type = PASSPHRASE_NONE
        volume = 0x7ffd57981dc4 "root"
        source = 0x7ffd57981dc9 "/dev/disk/by-uuid/8372fb39-9ba4-461a-a618-07dcaae66280"
        status = CRYPT_INACTIVE
        tries = 0
        key_file = 0x0
        config = 0x7ffd57981e05 "luks,discard,fido2-device=auto,x-initrd.attach"
        use_cached_passphrase = true
        try_discover_key = true
        discovered_key_fn = 0x7ffd5797fa70 "root.key"
        passwords = 0x0
        cd = 0x559c6b192830
        verb = 0x7ffd57981dbd "attach"
        r = 0
        __func__ = "\000\000\000"
2  0x0000559c621231e6 in main (argc=6, argv=0x7ffd5797fe98) at ../src/cryptsetup/cryptsetup.c:2674
        r = 32553
        __func__ = "\000\000\000\000"

Follow-up for 53b6c99018

man/daemon.xml

@@ -684,6 +684,15 @@ fi</programlisting>
     <citerefentry><refentrytitle>file-hierarchy</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
   </refsect1>
 
+  <refsect1>
+    <title>Notes</title>
+
+    <para>
+       All example codes in this page are licensed under <literal>MIT No Attribution</literal>
+      (SPDX-License-Identifier: MIT-0).
+    </para>
+  </refsect1>
+
   <refsect1>
     <title>See Also</title>
     <para><simplelist type="inline">

man/systemd-system.conf.xml

@@ -302,7 +302,7 @@
         and running in an initrd equivalent to true, otherwise false. This implements a restricted subset of
         the per-unit setting of the same name, see
         <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry> for
-        details: currently, the <literal>full</literal> or <literal>struct</literal> values are not
+        details: currently, the <literal>full</literal> or <literal>strict</literal> values are not
         supported.</para>
 
         <xi:include href="version-info.xml" xpointer="v256"/></listitem>

rules.d/60-persistent-storage.rules.in

@@ -136,6 +136,12 @@ KERNEL!="sr*|mmcblk[0-9]boot[0-9]", IMPORT{builtin}="blkid"
 LABEL="persistent_storage_blkid_probe_end"
 {% endif %}
 
+# Decrease devlink priority for whole disk of ISO hybrid images, and make the
+# priority for partitions in the image relatively higher. This is for the case
+# that a disk and one of its partition have the same label or so.
+# See issue #28468.
+ENV{ID_FS_TYPE}=="iso9660", ENV{DEVTYPE}=="disk", OPTIONS+="link_priority=-10"
+
 # by-label/by-uuid links (filesystem metadata)
 ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID_ENC}=="?*", SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_ENC}"
 ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_LABEL_ENC}=="?*", SYMLINK+="disk/by-label/$env{ID_FS_LABEL_ENC}"

rules.d/99-systemd.rules.in

@@ -22,6 +22,10 @@ SUBSYSTEM=="ubi", TAG+="systemd"
 
 SUBSYSTEM=="block", TAG+="systemd"
 
+# Make dm devices can replace existing symlinks with the same priority.
+# Otherwise, activating a device while another is being deactivated may fail.
+SUBSYSTEM=="block", KERNEL=="dm-*", ENV{.UDEV_REPLACE_SYMLINK_WITH_SAME_PRIORITY}="1"
+
 # When a dm device is first created, it's just an empty container. Ignore it.
 # DM_NAME is not set in this case, but it's set on spurious "add" events that occur later.
 SUBSYSTEM=="block", ACTION=="add", KERNEL=="dm-*", ENV{DM_NAME}!="?*", ENV{SYSTEMD_READY}="0"

src/cryptsetup/cryptsetup-pkcs11.c

@@ -16,6 +16,7 @@
 #include "fileio.h"
 #include "format-util.h"
 #include "hexdecoct.h"
+#include "iovec-util.h"
 #include "macro.h"
 #include "memory-util.h"
 #include "parse-util.h"
@@ -31,8 +32,7 @@ int decrypt_pkcs11_key(
                 const char *key_file,         /* We either expect key_file and associated parameters to be set (for file keys) … */
                 size_t key_file_size,
                 uint64_t key_file_offset,
-                const void *key_data,         /* … or key_data and key_data_size (for literal keys) */
+                const struct iovec *key_data, /* … or literal keys via key_data */
-                size_t key_data_size,
                 usec_t until,
                 AskPasswordFlags askpw_flags,
                 void **ret_decrypted_key,
@@ -47,15 +47,15 @@ int decrypt_pkcs11_key(
 
         assert(friendly_name);
         assert(pkcs11_uri);
-        assert(key_file || key_data);
+        assert(key_file || iovec_is_set(key_data));
         assert(ret_decrypted_key);
         assert(ret_decrypted_key_size);
 
         /* The functions called here log about all errors, except for EAGAIN which means "token not found right now" */
 
-        if (key_data) {
+        if (iovec_is_set(key_data)) {
-                data.encrypted_key = (void*) key_data;
+                data.encrypted_key = (void*) key_data->iov_base;
-                data.encrypted_key_size = key_data_size;
+                data.encrypted_key_size = key_data->iov_len;
 
                 data.free_encrypted_key = false;
         } else {

src/cryptsetup/cryptsetup-pkcs11.h

@@ -16,8 +16,7 @@ int decrypt_pkcs11_key(
                 const char *key_file,
                 size_t key_file_size,
                 uint64_t key_file_offset,
-                const void *key_data,
+                const struct iovec *key_data,
-                size_t key_data_size,
                 usec_t until,
                 AskPasswordFlags askpw_flags,
                 void **ret_decrypted_key,
@@ -39,8 +38,7 @@ static inline int decrypt_pkcs11_key(
                 const char *key_file,
                 size_t key_file_size,
                 uint64_t key_file_offset,
-                const void *key_data,
+                const struct iovec *key_data,
-                size_t key_data_size,
                 usec_t until,
                 AskPasswordFlags askpw_flags,
                 void **ret_decrypted_key,

src/cryptsetup/cryptsetup.c

@@ -1471,8 +1471,7 @@ static int attach_luks_or_plain_or_bitlk_by_fido2(
                 struct crypt_device *cd,
                 const char *name,
                 const char *key_file,
-                const void *key_data,
+                const struct iovec *key_data,
-                size_t key_data_size,
                 usec_t until,
                 uint32_t flags,
                 bool pass_volume_key) {
@@ -1489,7 +1488,7 @@ static int attach_luks_or_plain_or_bitlk_by_fido2(
         assert(name);
         assert(arg_fido2_device || arg_fido2_device_auto);
 
-        if (arg_fido2_cid && !key_file && !key_data)
+        if (arg_fido2_cid && !key_file && !iovec_is_set(key_data))
                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
                                         "FIDO2 mode with manual parameters selected, but no keyfile specified, refusing.");
 
@@ -1513,7 +1512,7 @@ static int attach_luks_or_plain_or_bitlk_by_fido2(
                                                 arg_fido2_rp_id,
                                                 arg_fido2_cid, arg_fido2_cid_size,
                                                 key_file, arg_keyfile_size, arg_keyfile_offset,
-                                                key_data, key_data_size,
+                                                key_data,
                                                 until,
                                                 arg_fido2_manual_flags,
                                                 "cryptsetup.fido2-pin",
@@ -1623,8 +1622,7 @@ static int attach_luks_or_plain_or_bitlk_by_pkcs11(
                 struct crypt_device *cd,
                 const char *name,
                 const char *key_file,
-                const void *key_data,
+                const struct iovec *key_data,
-                size_t key_data_size,
                 usec_t until,
                 uint32_t flags,
                 bool pass_volume_key) {
@@ -1635,6 +1633,7 @@ static int attach_luks_or_plain_or_bitlk_by_pkcs11(
         _cleanup_(erase_and_freep) void *decrypted_key = NULL;
         _cleanup_(sd_event_unrefp) sd_event *event = NULL;
         _cleanup_free_ void *discovered_key = NULL;
+        struct iovec discovered_key_data = {};
         int keyslot = arg_key_slot, r;
         const char *uri = NULL;
         bool use_libcryptsetup_plugin = use_token_plugins();
@@ -1653,13 +1652,13 @@ static int attach_luks_or_plain_or_bitlk_by_pkcs11(
                                 return r;
 
                         uri = discovered_uri;
-                        key_data = discovered_key;
+                        discovered_key_data = IOVEC_MAKE(discovered_key, discovered_key_size);
-                        key_data_size = discovered_key_size;
+                        key_data = &discovered_key_data;
                 }
         } else {
                 uri = arg_pkcs11_uri;
 
-                if (!key_file && !key_data)
+                if (!key_file && !iovec_is_set(key_data))
                         return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "PKCS#11 mode selected but no key file specified, refusing.");
         }
 
@@ -1682,7 +1681,7 @@ static int attach_luks_or_plain_or_bitlk_by_pkcs11(
                                         friendly,
                                         uri,
                                         key_file, arg_keyfile_size, arg_keyfile_offset,
-                                        key_data, key_data_size,
+                                        key_data,
                                         until,
                                         arg_ask_password_flags,
                                         &decrypted_key, &decrypted_key_size);
@@ -2231,9 +2230,9 @@ static int attach_luks_or_plain_or_bitlk(
         if (token_type == TOKEN_TPM2)
                 return attach_luks_or_plain_or_bitlk_by_tpm2(cd, name, key_file, key_data, until, flags, pass_volume_key);
         if (token_type == TOKEN_FIDO2)
-                return attach_luks_or_plain_or_bitlk_by_fido2(cd, name, key_file, key_data->iov_base, key_data->iov_len, until, flags, pass_volume_key);
+                return attach_luks_or_plain_or_bitlk_by_fido2(cd, name, key_file, key_data, until, flags, pass_volume_key);
         if (token_type == TOKEN_PKCS11)
-                return attach_luks_or_plain_or_bitlk_by_pkcs11(cd, name, key_file, key_data->iov_base, key_data->iov_len, until, flags, pass_volume_key);
+                return attach_luks_or_plain_or_bitlk_by_pkcs11(cd, name, key_file, key_data, until, flags, pass_volume_key);
         if (key_data)
                 return attach_luks_or_plain_or_bitlk_by_key_data(cd, name, key_data, flags, pass_volume_key);
         if (key_file)

src/shared/cryptsetup-fido2.c

@@ -24,8 +24,7 @@ int acquire_fido2_key(
                 const char *key_file,
                 size_t key_file_size,
                 uint64_t key_file_offset,
-                const void *key_data,
+                const struct iovec *key_data,
-                size_t key_data_size,
                 usec_t until,
                 Fido2EnrollFlags required,
                 const char *askpw_credential,
@@ -45,10 +44,10 @@ int acquire_fido2_key(
                                         "Local verification is required to unlock this volume, but the 'headless' parameter was set.");
 
         assert(cid);
-        assert(key_file || key_data);
+        assert(key_file || iovec_is_set(key_data));
 
-        if (key_data)
+        if (iovec_is_set(key_data))
-                salt = IOVEC_MAKE(key_data, key_data_size);
+                salt = *key_data;
         else {
                 if (key_file_size > 0)
                         log_debug("Ignoring 'keyfile-size=' option for a FIDO2 salt file.");
@@ -252,7 +251,7 @@ int acquire_fido2_key_auto(
                                 /* key_file= */ NULL, /* salt is read from LUKS header instead of key_file */
                                 /* key_file_size= */ 0,
                                 /* key_file_offset= */ 0,
-                                salt, salt_size,
+                                &IOVEC_MAKE(salt, salt_size),
                                 until,
                                 required,
                                 "cryptsetup.fido2-pin",

src/shared/cryptsetup-fido2.h

@@ -20,8 +20,7 @@ int acquire_fido2_key(
                 const char *key_file,
                 size_t key_file_size,
                 uint64_t key_file_offset,
-                const void *key_data,
+                const struct iovec *key_data,
-                size_t key_data_size,
                 usec_t until,
                 Fido2EnrollFlags required,
                 const char *askpw_credential,
@@ -52,8 +51,7 @@ static inline int acquire_fido2_key(
                 const char *key_file,
                 size_t key_file_size,
                 uint64_t key_file_offset,
-                const void *key_data,
+                const struct iovec *key_data,
-                size_t key_data_size,
                 usec_t until,
                 Fido2EnrollFlags required,
                 const char *askpw_credential,

src/sysupdate/updatectl.c

@@ -1414,7 +1414,7 @@ static int verb_enable(int argc, char **argv, void *userdata) {
                                        "SetFeatureEnabled",
                                        &error,
                                        /* reply= */ NULL,
-                                       "sbt",
+                                       "sit",
                                        *feature,
                                        (int) enable,
                                        UINT64_C(0));

src/udev/udev-node.c

@@ -462,6 +462,18 @@ static int link_update(sd_device *dev, const char *slink, bool add) {
                                          * another device. Hence, it is not necessary to recreate it. */
                                         return 0;
 
+                                /* When the priorities are equivalent, replace symlink only when it is
+                                 * explicitly requested. This is necessary for DM devices, otherwise
+                                 * activating a device while another is being deactivated may fail. See issue
+                                 * #28141. However, in general, replacing symlink with a same-priority device
+                                 * is dangerous. For example, when managing or assembling multiple disks,
+                                 * when fdisk or wipefs is called, we trigger synthesized events and that can
+                                 * replace existing symlinks, and unexpected device may be used and data may
+                                 * be lost. */
+                                if (current_prio == prio &&
+                                    device_get_property_bool(dev, ".UDEV_REPLACE_SYMLINK_WITH_SAME_PRIORITY") <= 0)
+                                        return 0;
+
                                 /* This device has the equal or a higher priority than the current. Let's
                                  * create the devlink to our device node. */
                                 return node_create_symlink(dev, /* devnode = */ NULL, slink);

test/units/TEST-67-INTEGRITY.sh

@@ -34,6 +34,9 @@ ${DM_NAME} ${loop} - integrity-algorithm=$1
 EOF
 }
 
+udevadm settle
+udevadm control --log-level=debug
+
 image_dir="$(mktemp -d -t -p / integrity.tmp.XXXXXX)"
 if [ -z "${image_dir}" ] || [ ! -d "${image_dir}" ]; then
     echo "mktemp under / failed"
@@ -93,13 +96,7 @@ do
 
     # Check the signature on the FS to ensure we can retrieve it and that is matches
     if [ -e "${FULL_DM_DEV_NAME}" ]; then
-        # If a separate device is used for the metadata storage, then blkid will return one of the loop devices
+        if [ "$(blkid -U "${FS_UUID}")" != "${FULL_DM_DEV_NAME}" ]; then
-        if [ "${separate_data}" -eq 1 ]; then
-            dev_name="$(integritysetup status ${DM_NAME} | grep '^\s*device:' | awk '{print $2}')"
-        else
-            dev_name="${FULL_DM_DEV_NAME}"
-        fi
-        if [ "${dev_name}" != "$(blkid -U "${FS_UUID}")" ]; then
             echo "Failed to locate FS with matching UUID!"
             exit 1
         fi