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<title>glusterfs.git/contrib/uuid/copy.c, branch v6.8</title>
<subtitle></subtitle>
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<entry>
<title>build: remove uuid from contrib/</title>
<updated>2018-07-27T17:37:32+00:00</updated>
<author>
<name>Niels de Vos</name>
<email>ndevos@redhat.com</email>
</author>
<published>2018-07-23T09:35:16+00:00</published>
<link rel='alternate' type='text/html' href='http://dev.gluster.org/cgit/glusterfs.git/commit/?id=7f7296d1f52f1b4308551fafad4eb22e3855b382'/>
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Bundling libuuid is not needed anymore, all current distributions
provide it now.

Some OS's provide their own uuid_*() functions in libc. These may not be
fully compatible with libuuid.so found on Linux systems. In that case,
either e2fsprogs-libuuid can be installed, or support for the native
uuid_*() functions can be added to libglusterfs/src/compat-uuid.h.

Change-Id: Icfa48caea81307a3bca549364969c2038911942b
Fixes: bz#1607319
Signed-off-by: Niels de Vos &lt;ndevos@redhat.com&gt;
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<pre>
Bundling libuuid is not needed anymore, all current distributions
provide it now.

Some OS's provide their own uuid_*() functions in libc. These may not be
fully compatible with libuuid.so found on Linux systems. In that case,
either e2fsprogs-libuuid can be installed, or support for the native
uuid_*() functions can be added to libglusterfs/src/compat-uuid.h.

Change-Id: Icfa48caea81307a3bca549364969c2038911942b
Fixes: bz#1607319
Signed-off-by: Niels de Vos &lt;ndevos@redhat.com&gt;
</pre>
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</content>
</entry>
<entry>
<title>Avoid conflict between contrib/uuid and system uuid</title>
<updated>2015-04-04T17:48:35+00:00</updated>
<author>
<name>Emmanuel Dreyfus</name>
<email>manu@netbsd.org</email>
</author>
<published>2015-04-02T13:51:30+00:00</published>
<link rel='alternate' type='text/html' href='http://dev.gluster.org/cgit/glusterfs.git/commit/?id=28397cae4102ac3f08576ebaf071ad92683097e8'/>
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<content type='text'>
glusterfs relies on Linux uuid implementation, which
API is incompatible with most other systems's uuid. As
a result, libglusterfs has to embed contrib/uuid,
which is the Linux implementation, on non Linux systems.
This implementation is incompatible with systtem's
built in, but the symbols have the same names.

Usually this is not a problem because when we link
with -lglusterfs, libc's symbols are trumped. However
there is a problem when a program not linked with
-lglusterfs will dlopen() glusterfs component. In
such a case, libc's uuid implementation is already
loaded in the calling program, and it will be used
instead of libglusterfs's implementation, causing
crashes.

A possible workaround is to use pre-load libglusterfs
in the calling program (using LD_PRELOAD on NetBSD for
instance), but such a mechanism is not portable, nor
is it flexible. A much better approach is to rename
libglusterfs's uuid_* functions to gf_uuid_* to avoid
any possible conflict. This is what this change attempts.

BUG: 1206587
Change-Id: I9ccd3e13afed1c7fc18508e92c7beb0f5d49f31a
Signed-off-by: Emmanuel Dreyfus &lt;manu@netbsd.org&gt;
Reviewed-on: http://review.gluster.org/10017
Tested-by: Gluster Build System &lt;jenkins@build.gluster.com&gt;
Reviewed-by: Niels de Vos &lt;ndevos@redhat.com&gt;
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<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
glusterfs relies on Linux uuid implementation, which
API is incompatible with most other systems's uuid. As
a result, libglusterfs has to embed contrib/uuid,
which is the Linux implementation, on non Linux systems.
This implementation is incompatible with systtem's
built in, but the symbols have the same names.

Usually this is not a problem because when we link
with -lglusterfs, libc's symbols are trumped. However
there is a problem when a program not linked with
-lglusterfs will dlopen() glusterfs component. In
such a case, libc's uuid implementation is already
loaded in the calling program, and it will be used
instead of libglusterfs's implementation, causing
crashes.

A possible workaround is to use pre-load libglusterfs
in the calling program (using LD_PRELOAD on NetBSD for
instance), but such a mechanism is not portable, nor
is it flexible. A much better approach is to rename
libglusterfs's uuid_* functions to gf_uuid_* to avoid
any possible conflict. This is what this change attempts.

BUG: 1206587
Change-Id: I9ccd3e13afed1c7fc18508e92c7beb0f5d49f31a
Signed-off-by: Emmanuel Dreyfus &lt;manu@netbsd.org&gt;
Reviewed-on: http://review.gluster.org/10017
Tested-by: Gluster Build System &lt;jenkins@build.gluster.com&gt;
Reviewed-by: Niels de Vos &lt;ndevos@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Bring in uuid to contrib</title>
<updated>2010-07-15T10:18:53+00:00</updated>
<author>
<name>Vijay Bellur</name>
<email>vijay@gluster.com</email>
</author>
<published>2010-07-15T00:33:03+00:00</published>
<link rel='alternate' type='text/html' href='http://dev.gluster.org/cgit/glusterfs.git/commit/?id=bb209f56147878ac420e4d1915e989bb11d272a2'/>
<id>bb209f56147878ac420e4d1915e989bb11d272a2</id>
<content type='text'>
Signed-off-by: Vijay Bellur &lt;vijay@gluster.com&gt;
Signed-off-by: Anand V. Avati &lt;avati@dev.gluster.com&gt;

BUG: 971 (dynamic volume management)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=971
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<pre>
Signed-off-by: Vijay Bellur &lt;vijay@gluster.com&gt;
Signed-off-by: Anand V. Avati &lt;avati@dev.gluster.com&gt;

BUG: 971 (dynamic volume management)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=971
</pre>
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