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Removes _cleanup_dhcp_lease_free_. While the automatic cleanup
functions are great to have this one is never used and causes
a warning in clang.
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There's no need to save the old sigmask, if we are going to die. Let's
simplify this. Also, reset all the signal handlers, so that we don't
leave SIG_IGN set for some of them across reexec.
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omitted
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to the initial transaction
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Avoid freeing the netdev structure in the cleanup macro.
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Update for the current behavior of path_strv_resolve which now returns
paths relative to the given root, not the full absolute paths.
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This restores the original root handling logic that was present prior to
112cfb18 when path expansion moved to path_strv_canonicalize_absolute.
That behavior partially went away in 12ed81d9.
Alternatively all users of conf_files_list* could be updated to
concatenate the paths themselves as unit_file_query_preset did but since
no user needs the un-concatenated form that is pointless duplication.
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Since 12ed81d9 path_strv_canonicalize_absolute leaves the search list
relative to the given root directory instead of resolving paths to their
true location as the name implies. To better reflect this behavior
rename to the less strongly worded path_strv_resolve.
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Otherwise the add_symlink() function tries to make directories for
each slash even for the slash after the @ symbol in the final link
name, failing for /dev/3270/tty1.
Based on a patch by Werner Fink <werner@suse.de>.
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Allocating on the stack should be fine for the fixed number
of items.
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add tests for:
- filename_is_safe
- ascii_strlower
- files_same
- is_valid_documentation_url
- file_in_same_dir
- endswith
- close_nointr
- unlink_noerrno
- readlink_and_make_absolute
- read_one_char
- ignore_signals
- strshorten
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Don't close the fd given to sd-icmp6-nd, since it will be aynschonously closed
by sd_icmp6_nd_unref
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The correct path is now <sys/xattr.h> (from glibc-headers) and no longer
<attr/xattr.h> (from libattr-devel.)
Fixes: 34c10968cbe3b5591b3c0ce225b8694edd9709d0
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The idea was to not fail on, nor to ignore errors from chown()/chmod(),
but to proceed and simply return the most recent error...
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The link was unintentionally being unreferenced instead of referenced for the
MTU setup.
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Previously it would recursively copy the entire tree in, and descend
into subdirectories even if the destination already exists. Let's do
what the documentation says and not do that.
If files down the tree shall be copied too, they should get their own
"C" lines.
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Also stop warning about unknown kernel cmdline options in the various
tools, not just in PID 1
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value starting with "systemd."
As generators and other components started to maintain their own kernel
command line options this help text needed more and more exceptions and
wasn't complete anyway. Fixing that would leak more information about
specific generators into PID 1, which we should avoid.
Given that kernel cmdline handling traditionally doesn't generate errors
or show help texts, let's just remove the logic for it for systemd too.
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debug-generator can mask specific units if they are specified on the
kernel command line with systemd.mask=.
debug-generator can pull in debug-shell.service is systemd.debug-shell
is passed on the kernel command line.
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client_initialize name is misleading, since the function is actually
useful at the *end*, to reinitialize the object. But reset is shorter,
so rename it to client_reset.
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Enable DHCPv6 support by creating a DHCPv6 boolean in the Network
section. Add necessary DHCPv6 structures and initial function calls.
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Enhance the test case by generating a Reply. With a properly formed
Reply the callback function will be called and the additional
earlier event loop exit can now be removed.
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Receive and parse a Reply from the server. Set up T1 and T2 timers and
notify the library user of an acquired DHCPv6 lease.
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Enhance the test case by replying with an Advertise message to the
client. Copy the transaction id, IAID and DUID from the Solicit
message. Verify the Request message created by the DHCPv6 client
implementation and move the main loop exit to the end of the Request
message verification.
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As described in RFC 3315, Section 17.1.2, a client has to wait until the
first timeout has elapsed before it is allowed to request IPv6 addresses
from the DHCPv6 server. This is indicated by a non-NULL lease and a
non-zero resend count. Should the Advertisement contain a preference
value of 255 or be received after the first timeout, IPv6 address
requesting is started immediately.
In response to these events, create a Request message and set up proper
resend timers to send the message to the server.
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Update the start function so that the client state can be conveniently
changed with the previous message resend timers cleared. On initial
startup also create and bind to the UDP socket.
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Add a basic test case excersising once more option parsing function
in addition to lease handling. Check that the address iteration
functions return the correct IPv6 address and lifetimes and that
only one address is returned. Also verify that the server ID and
preference values are read correctly.
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Add support functions for accessing the current client lease as well
as iterating over the addresses and get their preferred and valid
lifetimes.
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When receiving DHCPv6 messages, discard the ones that are not meant
for DHCPv6 clients and verify the transaction id. Once that is done,
process the Advertise message and select the Advertise with the
highest preference.
Create a separate function for lease information parsing so that it
can be reused in other parts of the protocol. Verify both DUID and
IAID in the received message and store other necessary information
with the lease structure.
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Add functionality to parse DHCPv6 Identity Association for
Non-temporary (IA_NA) and Temporary Addresses (IA_TA) options.
Both of them contain one or more IA Address (IAADDR) options
and optinally a status code option. Only the IA_NA option
contains lease lifetimes. See RFC 3315, sections 22.4., 22.5.,
22.6., 22.13. and appendix B. for details. If the lease
timeouts are not set, use the ones recommended for servers in
section 22.4.
Factor out common code in the form of an option header parsing
helper function.
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Create a structure describing a DHCPv6 lease. Add internal functions
for creating a new lease and accessing the server ID, preference and
IAID. Provide functions for clearing addresses and associated timers.
External users are initially given only the capabilities of
referencing and unreferencing the lease structure.
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Verify the Solicit message created by the DHCPv6 client code.
Provide local variants for detect_vm(), detect_container() and
detect_virtualization() defined in virt.h. This makes the DHCPv6
library believe it is run in a container and does not try to request
interface information from udev for the non-existing interface index
used by the test case code.
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Implement the initial functionality used for creating a DHCPv6 Solicit
message containing the needed options and send it to the DHCPv6
broadcast address. Increase the sent message count and ensure that
the Solicit Initial Retransmission Time is strictly greater than
the Solicitation IRT as described in RFC 3315, section 17.1.2.
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Add a function that creates a UDP socket bound to the given interface
and optionally to an IPv6 address. Add another function that will
send the DHCPv6 UDP packet to its destination.
Using IPV6_PKTINFO in setsockopt to bind the IPv6 socket to an
interface is documented in section 4. of RFC 3542, "Advanced Sockets
Application Program Interface (API) for IPv6"
Add a define for DHCPv6 Relay Agents and Servers multicast address as
its not available elsewhere.
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Add option appending and parsing. DHCPv6 options are not aligned, thus
the option handling code must be able to handle options starting at
any byte boundary.
Add a test case for the basic option handling.
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Add the core of DHCPv6 client message retransmission and upper bound
timer and message count handling according to RFC 3315 Secions 7.1.2
and 14. Omit the DHCPv6 initial delay; for now it is assumed that
systemd-networkd will provide decent startup randomization that will
desynchronize the clients.
When reinitializing the client, clear all timers.
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