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Require that all headers are guarded by a symbol named
LIBVIRT_$FILENAME
where $FILENAME is the uppercased filename, with all characters
outside a-z changed into '_'.
Note we do not use a leading __ because that is technically a
namespace reserved for the toolchain.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
In many files there are header comments that contain an Author:
statement, supposedly reflecting who originally wrote the code.
In a large collaborative project like libvirt, any non-trivial
file will have been modified by a large number of different
contributors. IOW, the Author: comments are quickly out of date,
omitting people who have made significant contribitions.
In some places Author: lines have been added despite the person
merely being responsible for creating the file by moving existing
code out of another file. IOW, the Author: lines give an incorrect
record of authorship.
With this all in mind, the comments are useless as a means to identify
who to talk to about code in a particular file. Contributors will always
be better off using 'git log' and 'git blame' if they need to find the
author of a particular bit of code.
This commit thus deletes all Author: comments from the source and adds
a rule to prevent them reappearing.
The Copyright headers are similarly misleading and inaccurate, however,
we cannot delete these as they have legal meaning, despite being largely
inaccurate. In addition only the copyright holder is permitted to change
their respective copyright statement.
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Rather than have virJSONValueArraySize return a -1 when the input
is not an array and then splat an error message, let's check for
an array before calling and then change the return to be a size_t
instead of ssize_t.
That means using the helper virJSONValueIsArray as well as using a
more generic error message such as "Malformed <something> array".
In some cases we can remove stack variables and when we cannot,
those variables should be size_t not ssize_t. Alter a few references
of if (!value) to be if (value == 0) instead as well.
Some callers can already assume an array is being worked on based
on the previous call, so there's less to do.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Right-aligning backslashes when defining macros or using complex
commands in Makefiles looks cute, but as soon as any changes is
required to the code you end up with either distractingly broken
alignment or unnecessarily big diffs where most of the changes
are just pushing all backslashes a few characters to one side.
Generated using
$ git grep -El '[[:blank:]][[:blank:]]\\$' | \
grep -E '*\.([chx]|am|mk)$$' | \
while read f; do \
sed -Ei 's/[[:blank:]]*[[:blank:]]\\$/ \\/g' "$f"; \
done
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
In my previous commit of b1d87f9ad9 I've made a typo breaking
the FreeBSD build. s/ipAaddr/ipAddr/
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The recent deprecation in glibc (commit b76e065991ec) means the
module will fail to build entirely:
nss/libvirt_nss.c: In function '_nss_libvirt_gethostbyname_r':
nss/libvirt_nss.c:363:13: error: RES_USE_INET6 is deprecated [-Werror]
int af = ((_res.options & RES_USE_INET6) ? AF_INET6 : AF_INET);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This resolver option was removed shortly after being introduced,
and application using it are already broken anyway.
If the 'nleases < 0' on return, then the subsequent call to
findLeaseInJSON will not produce the expected results (passed
in as a size_t, but nleases is a ssize_t). So check if the
returned value < 0 and if so, goto cleanup.
Found by Coverity as a NEGATIVE_RETURNS event
So far the NSS module looks up only hostnames as provided by
guests themselves. However, there are some cases where this is
not enough: e.g. when there's a fresh new guest being installed
(with some generic hostname) say from a live ISO image; or some
(older) systems don't advertise their hostname in DHCP
transactions at all.
In cases like that it would be helpful if we translate domain
name as seen by libvirt too so that users can:
# virsh start $dom && ssh $dom
In order to achieve that new libvirt-guest module is introduced,
while older libvirt module maintains its current behaviour (that
is translating guest provided names into IP addresses).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The part of the code that iterates over an array of JSON values
is going to be re-used. Instead of copying it over, move it to a
separate function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The part of the code that appends found IP address into a list is
going to be re-used. Instead of copying it over, move it to a
separate function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The name of the exported functions for an NSS module is quite
fixed, it is derived from the module name:
_nss_$module_$function
Since we will create another NSS module with very similar
implementation we might as well generate the function names at
the compile time.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The NSS module shouldn't rely on custom leases database to not have
entries for leases which have expired.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
* tools/nss/libvirt_nss.[ch]: add BSD-comptabile wrappers and
register via the nss_module_register() interface
* m4/virt-nss.m4: add checks if we're building NSS for FreeBSD
* tools/Makefile.am: handle target library name differences, as
Linux needs libnss_libvirt.so.2 and FreeBSD needs
nss_libvirt.so.1. Also, different syms files have to be used
as Linux needs to export all the methods while FreeBSD
only needs to have nss_module_register()
* tests/nsstest.c, tests/nssmock.c: s/__linux__/NSS/
* tests/nssmock.c: pass int instead of mode_t to va_arg() to please
gcc 4.8
* libvirt_nss_bsd.syms: FreeBSD syms file
Every aligning requires at least one cast and it's hard to read. Let's
make a function that makes sure the pointer is moved according to the
alignment and use that to move throughout the data buffer.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This function is a different beast compared to previous ones.
But yet again, nothing surprising is happening here.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The implementation is pretty straightforward. Moreover, because
of the nature of things, gethostbyname_r and gethostbyname2_r can
be implemented at the same time too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Name Service Switch is a glibc feature responsible for many
things. Translating domain names into IP addresses and vice versa
is just one of them. However, currently it's the only
functionality that this commit is tickling. Well, in this commit
the plugin skeleton is introduced. Implementation to come in next
patches.
Because of the future testing, where the implementation is to be
linked with a test, this needs to go into static library. Linking
a program with an .so statically is not portable. Therefore a
dummy libnss_libvirt_impl library is being introduced too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
