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b9cbb08e0a
4
NEWS
4
NEWS
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@ -493,8 +493,8 @@ CHANGES WITH 247 in spe:
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* The SystemCallErrorNumber= unit file setting now accepts the new
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* The SystemCallErrorNumber= unit file setting now accepts the new
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"kill" and "log" actions, in addition to arbitrary error number
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"kill" and "log" actions, in addition to arbitrary error number
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specifications as before. If "kill" the processes are killed on the
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specifications as before. If "kill" the the processes are killed on
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event, if "log" the offending system call is audit logged.
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the event, if "log" the offending system call is audit logged.
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* A new SystemCallLog= unit file setting has been added that accepts a
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* A new SystemCallLog= unit file setting has been added that accepts a
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list of system calls that shall be logged about (audit).
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list of system calls that shall be logged about (audit).
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@ -77,7 +77,7 @@ manager, please consider supporting the following interfaces.
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container instance) or creating one scope unit for each container instance
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container instance) or creating one scope unit for each container instance
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via systemd's transient unit API (in case you have one container manager
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via systemd's transient unit API (in case you have one container manager
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that manages all instances. Either way, make sure to set `Delegate=yes` in
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that manages all instances. Either way, make sure to set `Delegate=yes` in
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it. This ensures that the unit you created will be part of all cgroup
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it. This ensures that that the unit you created will be part of all cgroup
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controllers (or at least the ones systemd understands). The latter may also
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controllers (or at least the ones systemd understands). The latter may also
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be done via `systemd-machined`'s `CreateMachine()` API. Make sure to use the
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be done via `systemd-machined`'s `CreateMachine()` API. Make sure to use the
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cgroup path systemd put your process in for all operations of the container.
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cgroup path systemd put your process in for all operations of the container.
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@ -364,7 +364,7 @@ If you write software that wants to detect whether it is run in a container,
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please check `/proc/1/environ` and look for the `container=` environment
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please check `/proc/1/environ` and look for the `container=` environment
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variable. Do not assume the environment variable is inherited down the process
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variable. Do not assume the environment variable is inherited down the process
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tree. It generally is not. Hence check the environment block of PID 1, not your
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tree. It generally is not. Hence check the environment block of PID 1, not your
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own. Note though that this file is only accessible to root. systemd hence early
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own. Note though that that file is only accessible to root. systemd hence early
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on also copies the value into `/run/systemd/container`, which is readable for
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on also copies the value into `/run/systemd/container`, which is readable for
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everybody. However, that's a systemd-specific interface and other init systems
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everybody. However, that's a systemd-specific interface and other init systems
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are unlikely to do the same.
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are unlikely to do the same.
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@ -517,7 +517,7 @@ _packed_ struct HashTableObject {
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```
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```
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The structure of both DATA_HASH_TABLE and FIELD_HASH_TABLE objects are
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The structure of both DATA_HASH_TABLE and FIELD_HASH_TABLE objects are
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identical. They implement a simple hash table, with each cell containing
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identical. They implement a simple hash table, which each cell containing
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offsets to the head and tail of the singly linked list of the DATA and FIELD
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offsets to the head and tail of the singly linked list of the DATA and FIELD
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objects, respectively. DATA's and FIELD's next_hash_offset field are used to
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objects, respectively. DATA's and FIELD's next_hash_offset field are used to
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chain up the objects. Empty cells have both offsets set to 0.
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chain up the objects. Empty cells have both offsets set to 0.
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@ -651,15 +651,15 @@ look up the FIELD object and follow the chain of links to all DATA it includes.
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### Writing
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### Writing
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When an entry is appended to the journal, for each of its data fields the data
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When an entry is appended to the journal for each of its data fields the data
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hash table should be checked. If the data field does not yet exist in the file,
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hash table should be checked. If the data field does not yet exist in the file
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it should be appended and added to the data hash table. When a data field's data
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it should be appended and added to the data hash table. When a field data
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object is added, the field hash table should be checked for the field name of
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object is added the field hash table should be checked for the field name of
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the data field, and a field object be added if necessary. After all data fields
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the data field, and a field object be added if necessary. After all data fields
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(and recursively all field names) of the new entry are appended and linked up
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(and recursively all field names) of the new entry are appended and linked up
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in the hashtables, the entry object should be appended and linked up too.
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in the hashtables the entry object should be appended and linked up too.
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At regular intervals a tag object should be written if sealing is enabled (see
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In regular intervals a tag object should be written if sealing is enabled (see
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above). Before the file is closed a tag should be written too, to seal it off.
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above). Before the file is closed a tag should be written too, to seal it off.
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Before writing an object, time and disk space limits should be checked and
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Before writing an object, time and disk space limits should be checked and
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@ -301,8 +301,8 @@ s - Service VLAN, m - Two-port MAC Relay (TPMR)
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</term>
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</term>
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<listitem><para>Reconfigure network interfaces. Takes interface name or index number. Note that
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<listitem><para>Reconfigure network interfaces. Takes interface name or index number. Note that
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this does not reload <filename>.netdev</filename> or <filename>.network</filename>
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this does not reload <filename>.netdev</filename> or <filename>.network</filename>
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corresponding to the specified interface. So, if you edit config files, it is necessary to call
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corresponding to the the specified interface. So, if you edit config files, it is necessary to
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<command>networkctl reload</command> first to apply new settings.</para></listitem>
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call <command>networkctl reload</command> first to apply new settings.</para></listitem>
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</varlistentry>
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</varlistentry>
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<varlistentry>
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<varlistentry>
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@ -57,7 +57,6 @@
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<funcprototype>
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<funcprototype>
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<funcdef>int sd_bus_message_append_array_space</funcdef>
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<funcdef>int sd_bus_message_append_array_space</funcdef>
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<paramdef>sd_bus_message *<parameter>m</parameter></paramdef>
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<paramdef>char <parameter>type</parameter></paramdef>
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<paramdef>char <parameter>type</parameter></paramdef>
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<paramdef>size_t <parameter>size</parameter></paramdef>
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<paramdef>size_t <parameter>size</parameter></paramdef>
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<paramdef>void **<parameter>ptr</parameter></paramdef>
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<paramdef>void **<parameter>ptr</parameter></paramdef>
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@ -1103,7 +1103,7 @@ int copy_file_atomic_full(
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assert(from);
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assert(from);
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assert(to);
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assert(to);
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/* We try to use O_TMPFILE here to create the file if we can. Note that this only works if COPY_REPLACE is not
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/* We try to use O_TMPFILE here to create the file if we can. Note that that only works if COPY_REPLACE is not
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* set though as we need to use linkat() for linking the O_TMPFILE file into the file system but that system
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* set though as we need to use linkat() for linking the O_TMPFILE file into the file system but that system
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* call can't replace existing files. Hence, if COPY_REPLACE is set we create a temporary name in the file
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* call can't replace existing files. Hence, if COPY_REPLACE is set we create a temporary name in the file
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* system right-away and unconditionally which we then can renameat() to the right name after we completed
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* system right-away and unconditionally which we then can renameat() to the right name after we completed
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@ -248,8 +248,8 @@ int khash_put(khash *h, const void *buffer, size_t size) {
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int khash_put_iovec(khash *h, const struct iovec *iovec, size_t n) {
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int khash_put_iovec(khash *h, const struct iovec *iovec, size_t n) {
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struct msghdr mh = {
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struct msghdr mh = {
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.msg_iov = (struct iovec*) iovec,
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mh.msg_iov = (struct iovec*) iovec,
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.msg_iovlen = n,
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mh.msg_iovlen = n,
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};
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};
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ssize_t k;
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ssize_t k;
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@ -232,7 +232,7 @@ static int loop_configure(
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* ioctl can return EAGAIN in case we change the lo_offset field, if someone else is accessing the
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* ioctl can return EAGAIN in case we change the lo_offset field, if someone else is accessing the
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* block device while we try to reconfigure it. This is a pretty common case, since udev might
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* block device while we try to reconfigure it. This is a pretty common case, since udev might
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* instantly start probing the device as soon as we attach an fd to it. Hence handle it in two ways:
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* instantly start probing the device as soon as we attach an fd to it. Hence handle it in two ways:
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* first, let's take the BSD lock to ensure that udev will not step in between the point in
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* first, let's take the BSD lock that that ensures that udev will not step in between the point in
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* time where we attach the fd and where we reconfigure the device. Secondly, let's wait 50ms on
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* time where we attach the fd and where we reconfigure the device. Secondly, let's wait 50ms on
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* EAGAIN and retry. The former should be an efficient mechanism to avoid we have to wait 50ms
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* EAGAIN and retry. The former should be an efficient mechanism to avoid we have to wait 50ms
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* needlessly if we are just racing against udev. The latter is protection against all other cases,
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* needlessly if we are just racing against udev. The latter is protection against all other cases,
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@ -232,8 +232,8 @@ static void sync_with_progress(void) {
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BLOCK_SIGNALS(SIGCHLD);
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BLOCK_SIGNALS(SIGCHLD);
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/* Due to the possibility of the sync operation hanging, we fork a child process and monitor
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/* Due to the possibility of the sync operation hanging, we fork a child process and monitor the progress. If
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* the progress. If the timeout lapses, the assumption is that the particular sync stalled. */
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* the timeout lapses, the assumption is that that particular sync stalled. */
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r = asynchronous_sync(&pid);
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r = asynchronous_sync(&pid);
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if (r < 0) {
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if (r < 0) {
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@ -514,8 +514,10 @@ static int remount_with_timeout(MountPoint *m, int umount_log_level) {
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assert(m);
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assert(m);
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/* Due to the possibility of a remount operation hanging, we fork a child process and set a
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/* Due to the possibility of a remount operation hanging, we
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* timeout. If the timeout lapses, the assumption is that the particular remount failed. */
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* fork a child process and set a timeout. If the timeout
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* lapses, the assumption is that that particular remount
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* failed. */
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r = safe_fork("(sd-remount)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_LOG|FORK_REOPEN_LOG, &pid);
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r = safe_fork("(sd-remount)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_LOG|FORK_REOPEN_LOG, &pid);
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if (r < 0)
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if (r < 0)
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return r;
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return r;
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@ -550,8 +552,10 @@ static int umount_with_timeout(MountPoint *m, int umount_log_level) {
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assert(m);
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assert(m);
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/* Due to the possibility of a umount operation hanging, we fork a child process and set a
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/* Due to the possibility of a umount operation hanging, we
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* timeout. If the timeout lapses, the assumption is that the particular umount failed. */
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* fork a child process and set a timeout. If the timeout
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* lapses, the assumption is that that particular umount
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* failed. */
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r = safe_fork("(sd-umount)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_LOG|FORK_REOPEN_LOG, &pid);
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r = safe_fork("(sd-umount)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_LOG|FORK_REOPEN_LOG, &pid);
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if (r < 0)
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if (r < 0)
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return r;
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return r;
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