This regression test trigger issue #8
"Make Java InetAddress.getHostName() work" by exercising the DNS
resolver on localhost and a dns root server.

The test takes care of specifying NI_NOFQDN to resolve only the
hostname part of localhost ip.

It appears that the DNS ip is not communicated to the libc by
core/dhcp.cci: /etc/resolv.conf is not filled.

Test contributed while waiting for an fix idea to implement.

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

If Apache Ant is not found, the build fails with a cryptic error
message:

  [penberg@localhost osv]$ make
    ANT tests/bench
  Traceback (most recent call last):
    File "scripts/silentant.py", line 14, in <module>
      stderr = subprocess.PIPE)
    File "/usr/lib64/python2.7/subprocess.py", line 711, in __init__
      errread, errwrite)
    File "/usr/lib64/python2.7/subprocess.py", line 1308, in _execute_child
      raise child_exception
  OSError: [Errno 2] No such file or directory
  make: *** [all] Error 1

Make it more human friendly:

  [penberg@localhost osv]$ make
    ANT tests/bench
  Apache Ant not found. Please install the 'ant' package.
  make: *** [all] Error 1

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

OSerror exceptions throwed by subprocess.call are made silent using pass.
Fix this by properly catching the exception and pretty print it.

Signed-off-by: Benoit Canet <benoit@irqsave.net>

percpu had too little space allocated to support 64 vcpus, which
lead to a crash when booting with more than 13 vcpus. Fix it by
using a correct size to support 64 vcpus.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

make[1]: Entering directory `/home/zwu/virt/osv/build/release'
  GEN gen/include/bits/alltypes.h
  AS arch/x64/boot16.o
  LD boot.bin
  AS arch/x64/boot.o
  CXX loader.o
In file included from <command-line>:0:0:
./../../compiler/include/intrinsics.hh:10:127: error: new declaration ‘unsigned char __builtin_ia32_addcarryx_u64(unsigned char, long unsigned int, long unsigned int, long long unsigned int*)’ [-Werror]
./../../compiler/include/intrinsics.hh:10:127: error: ambiguates built-in declaration ‘unsigned char __builtin_ia32_addcarryx_u64(unsigned char, long long unsigned int, long long unsigned int, long long unsigned int*)’ [-Werror]
cc1plus: all warnings being treated as errors
make[1]: *** [loader.o] Error 1
make[1]: Leaving directory `/home/zwu/virt/osv/build/release'
make: *** [all] Error 2

Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>

Fix ant dependency on Debian

the ant package must also be explicitly specified, otherwise the following error will raise when building osv. 

raphaelsc@debian:~/Desktop/osv_dir/osv$ make
  ANT tests/bench
Traceback (most recent call last):
  File "scripts/silentant.py", line 14, in <module>
    stderr = subprocess.PIPE)
  File "/usr/lib/python2.6/subprocess.py", line 623, in __init__
    errread, errwrite)
  File "/usr/lib/python2.6/subprocess.py", line 1141, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory
make: *** [all] Error 1

Fix few minor but annoying coding style issues in drivers/virtio-blk.cc.

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

runtime.cc included a verbatim copy of the structure __locale_data
from glibc. We don't need it (not to mention that we're not supposed
to copy anything from glibc, it has the wrong license).

We previously believed that libstdc++ pokes into this structure, so it
needs to be in the exact format of glibc, but now I believe this is not
the case, and it only uses __nl_langinfo_l, which in our implementation
doesn't even adhere to the locale, and just uses the C locale.

Running "ctags -R" takes a long time because of git submodules:

  [penberg@localhost osv]$ time ctags -R

  real	0m35.076s
  user	0m18.770s
  sys	0m3.929s

Add a "make tags" target that's much faster to run:

  [penberg@localhost osv]$ time make tags
  find . -name "*.cc" -o -name "*.hh" -o -name "*.h" -o -name "*.c" | ctags -L -

  real	0m0.980s
  user	0m1.033s
  sys	0m0.158s

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

run.py trivial fixes

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>

Don't use stdio and specify -daemonize when user wants to attach
with qemu.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>

--detach is a boolean, shouldn't accept a flag.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>

We want to access the guest even when we're using usermode
networking. Redirect port 8080 to the outside.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>

Right now we send route messages with MTUs zeroed out. This can lead
to the following assert in ip_output.c (~line 308) triggering:

    KASSERT(mtu > 0, ("%s: mtu %d <= 0, rte=%p (rt_flags=0x%08x) ifp=%p",
        __func__, mtu, rte, (rte != NULL) ? rte->rt_flags : 0, ifp));

This happens because the code will assume that if there is a valid route, that
route will have a valid MTU. And in this case, will always use the route MTU
instead of the interface one.

When we allocate the route it has a valid MTU. But when we send the route
message, we will overwrite it with the value we see in the route message.  This
is done in rtsock.c:rt_setmetrics.

With this patch, those assertion stops happening.

A note: this wasn't been seen in local instalations, only on EC2. Looking at
it, there is nothing Xen specific. The reason it was not happening on local, is
that local traffic does not go through the default route, but rather through
the local 192.168.100.0/24 route. That one seems to take a different
configuration path, and thus sets the MTU correctly.

Also, fixed the Java command to forward all arguments to RunJava

Add Cloudius copyright statements to our tests (C++ and Java code).

Add Cloudius copyright statements in libc/.

One unfortunate problem we have in libc/ is that most of the code there was copied
from Musl, and Musl is copyrighted and licensed, but individual files do not carry
any statements - Rich Felker explains in Musl's COPYRIGHT file: "The decision to
exclude such comments is intentional, as it should be possible to carry around the
complete source code on tiny storage media."

In the future, we should find all the Musl files and add to each one the line
Copyright (C) 2005-2013 Rich Felker. But we'll need to do it carefully so as not
to wrongly attribute non-Musl code to Musl. In the meantime, if we just have
documentation/LICENSE-musl, and don't claim our own copyright on the musl files,
I think we're playing fair.

Add Cloudius copyright statement to files in java/. All of these (one C++
java.cc and the rest Java source code) are our own code.

Added Cloudius copyright statement to our own code in include/.
Also added include/api/LICENSE saying that these are copied from Musl
and public domain (according to the Musl COPYRIGHT file).

This patch addes a "LICENSE" file, explaining our copyright status and
3-clause BSD license.

It also includes in documentation/LICENSE-* the licenses of the four projects
we copied code from - FreeBSD, Prex, Open Solaris and Musl. Our top-level
LICENSE file refers to these separate LICENSE files.

Add "CONTRIBUTING" file, with instructions based mostly on Linux's
"Developer's Certificate of Origin 1.1" (Documentation/SendingPatches).

Added Cloudius copyright statement to source files in fs/ which are our
own code (and not from Prex or FreeBSD). Also added our copyright statement
in addition to the original one when I thought we made non-trivial changes
to the original.

Add Cloudius copyright and license statement to drivers/*.

A couple of header files were based on Linux's BSD-licensed header files
(e.g., include/uapi/linux/virtio_net.h) so they included the BSD license,
but not any copyright statement, so we can just replace that by our own
statement of the BSD license.

Added Cloudius copyright statement to core/*.

poll.cc already had a BSD copyright statement, I believe this is a mistake
(I think Guy wrote this code from scratch), but not wanting to rush to a
conclusion I'm leaving both copyright statements and we should address this
issue later.

Added copyright statement to all Javascript commands for our old CLI, in
console/*. We should eventually remove this directory, but while it still
exists, let's add copyright statements.

Added our copyright statements to some of the files in the top bsd/
directory, and in bsd/porting.

I only added our copyright to files which were completely by us - I did
not attempt to hunt which bsd or solaris files we modified to add our
copyright to them, I don't think this is important (or, we can do this
later).

I also found one header file (uma_stub.h) that had large chunks copied from
freebsd, so I added both the freebsd copyright and ours.

Add Cloudius copyright to everything in arch/x64. This includes C++ code, assembly
code, and ld scripts.

Sorry, previous commit left loader.cc with only a copyright statement.
Our copyright is important, but not *that* important!
I'll be more careful next time...

Add copyright statement to the source files in the top-level directory (except the
trivial dummy-shlib.cc).

By the way, I don't think this code really belongs in the top-level directory.

* %lu => %u when reading flush. The barrier flag had the same bug, but I
ended up recreating it for flush.
* Move check of xb_flags to after we check sc->flags != NULL, as spotted by
Dima