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string-util.[ch]
There are more than enough calls doing string manipulations to deserve
its own files, hence do something about it.
This patch also sorts the #include blocks of all files that needed to be
updated, according to the sorting suggestions from CODING_STYLE. Since
pretty much every file needs our string manipulation functions this
effectively means that most files have sorted #include blocks now.
Also touches a few unrelated include files.
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This moves is_gateway() from nss-myhostname into the basic APIs, and
makes it more like is_localhost(). Also, we rename it to
is_gateway_hostname() to make it more expressive.
Sharing this function in src/basic/ allows us to reuse the function for
routing name requests in resolved (in a later commit).
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Given that we already hardocde the loopback ifindex, following the
kernel's own logic, we can replace the invocation of
if_nametoindex("lo") with LOOPBACK_IFINDEX.
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Pretty trivial helper which wraps free() but returns NULL, so we can
simplify this:
free(foobar);
foobar = NULL;
to this:
foobar = mfree(foobar);
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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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addresses to hostnames
https://bugs.freedesktop.org/show_bug.cgi?id=87634
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"gateway." skips adding the domain search path and saves some queries to
the nameserver.
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account
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gateway
This is useful inside of containers or local networks to intrdouce a
stable name of the default gateway host (in case of containers usually
the host, in case of LANs usually local router).
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In the long run this should become a full fledged client to networkd
(but not before networkd learns bus support). For now, just pull
interesting data out of networkd, udev, and rtnl and present it to the
user, in a simple but useful output.
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glibc appears to be broken if we don't explicitly reset all error
variables, let's work around that.
https://bugzilla.redhat.com/show_bug.cgi?id=1125975
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We mostly use "family" to refer to AF_INET, AF_INET6, etc, let's use
this terminology here, too
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make use of it from machined
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This makes sure nss-myhostname not only resolves the local host name to
127.0.0.2/::1 but also the host name 'localhost: to 127.0.0.1/::1. This
makes installation of /etc/passwd optional, as it usually only includes
a mapping for 'localhost'.
This change also resolves ::1 to the local hostname (as before), but
also lists 'localhost' as an alias. This means look-ups are now fully
reversible, even though they are 1:n mappings.
Finally, the module will no longer erroneously claim that local IP
addresses which aren't on the loopback device were.
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http://lists.freedesktop.org/archives/systemd-devel/2013-April/010510.html
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Fixes a segfault in nscd when using nss-myhostname.
Nscd expects that an NSS module's gethostbyname4_r function returns
its first result in the pre-allocated gaih_addrtuple denoted by **pat.
(See nscd/aicache.c in the Glibc sources.) However, nss-myhostname
doesn't fill in **pat but allocates the first result in ‘buffer’, then
sets *pat. So nscd crashes (e.g. when running ‘getent ahosts
my-machine’).
Hard to tell if this is a bug in nscd, since there doesn't seem to be
a proper API spec for gethostbyname4_r. But in any case, this patch
fixes the crash by copying the first result to **pat.
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Also update the licence in the source files.
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In order to merge into the systemd repos.
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