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Previously, if the event loop never ran before sd_event_now() would
fail. With this change it will instead fall back to invoking now(). This
way, the function cannot fail anymore, except for programming error when
invoking it with wrong parameters.
This takes into account the fact that many callers did not handle the
error condition correctly, and if the callers did, then they kept simply
invoking now() as fall back on their own. Hence let's shorten the code
using this call, and make things more robust, and let's just fall back
to now() internally.
Whether now() is used or the cache timestamp may still be detected via
the return value of sd_event_now(). If > 0 is returned, then the fall
back to now() was used, if == 0 is returned, then the cached value was
returned.
This patch also simplifies many of the invocations of sd_event_now():
the manual fall back to now() can be removed. Also, in cases where the
call is invoked withing void functions we can now protect the invocation
via assert_se(), acknowledging the fact that the call cannot fail
anymore except for programming errors with the parameters.
This change is inspired by #841.
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Some places invoked fflush() directly with their own manual error
checking, let's unify all that by using fflush_and_check().
This also unifies the general error paths of fflush()+rename() file
writers.
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sd-dhcp-lease: fix handling of multiple routers
We only support one router, but in case more than one is given, we now ignore subsequent ones, rather than fall over.
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This adds support for option 43 (Vendor Specific Information) to
libsystemd-network DHCP code. The option carries an opaque object of n
octets, interpreted by vendor-specific code on the clients and
servers.
[@zonque: adopted to new unhexmem() API]
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We were ignoring failures from unhexchar, which meant that invalid
hex characters were being turned into garbage rather than the string
rejected.
Fix this by making unhexmem return an error code, also change the API
slightly, to return the size of the returned memory, reflecting the
fact that the memory is a binary blob,and not a string.
For convenience, still append a trailing NULL byte to the returned
memory (not included in the returned size), allowing callers to
treat it as a string without doing a second copy.
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currently if a dhcp server sends more than one router, sd-dhcp-lease
does not copy the ip because it assumes it will only ever be 4 bytes. a
dhcp server could send more than one ip in the router list, so we should
copy the first one and ignore the rest of the bytes.
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ldp_receive_frame after correct processing of the packet the state
should be LLDP_AGENT_RX_WAIT_FOR_FRAME not LLDP_AGENT_RX_UPDATE_INFO.
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Seems to have been removed by mistake in:
9021bb9f935c93b516b10c88db2a212a9e3a8140
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dhcp domain option
previously hostname_is_valid was used to validate domain names, which
would silently drop perfectly valid dns names that were longer than a
single dns label.
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It's only marginally shorter then the usual for() loop, but certainly
more readable.
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Reported by Michael Olbrich.
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shuts up valgrind/sanitizers
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compuler figure that out...
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This reverts commit 6ec8e7c763b7dfa82e25e31f6938122748d1608f.
This doesn't fix any issues, just makes the code harder to read.
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like:
src/shared/install.c: In function ‘unit_file_lookup_state’:
src/shared/install.c:1861:16: warning: ‘r’ may be used uninitialized in
this function [-Wmaybe-uninitialized]
return r < 0 ? r : state;
^
src/shared/install.c:1796:13: note: ‘r’ was declared here
int r;
^
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CID #1237623.
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We were using a space more often than not, and this way is
codified in CODING_STYLE.
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Replace ENOTSUP by EOPNOTSUPP as this is what linux actually uses.
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sd_dhcp6_client_new() tried to set the DUID based on the machine id.
If the host has no /etc/machine-id, the constructor would fail
making it impossible to create an sd_dhcp6_client instance.
Relax this and create a DUID only later as needed. This way a caller
caller can workaround a missing machine-id file and set a DUID of his
choosing via sd_dhcp6_client_set_duid().
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This patch removes includes that are not used. The removals were found with
include-what-you-use which checks if any of the symbols from a header is
in use.
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The test would treat the first non-empty set of matches in
match_paths, match_drivers, match_types, match_names as definitive
(essentially chaining them with OR). Make those tests instead match
like other tests and require all to pass if the set of patterns is
nonempty.
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This fixes various issues found by globally reordering the include
sections of all .c files.
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This reverts commit d6d810fbf8071f8510450dbacd1d083f37603656.
It's apparently not OK to pass MSG_CMSG_CLOEXEC to recvmsg() of raw
sockets.
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This fixes the test-suite again.
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Match{Name,OrginalName,Type,Driver,Path} can now take a space-separated glob of matches.
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As a malloc0 could fail, doing a strncpy without checking could
cause issues. Adding an assert should be good enough and in line
with other similar routines in the code.
Found with Coverity Fixes: CID#1261402
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./test-dhcp-client would attempt to operate fd 0, i.e. stdin.
For example, './test-dhcp-client </dev/null' would fail with EPERM
because /dev/null cannot be used with epoll.
https://bugzilla.redhat.com/show_bug.cgi?id=1076119
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