The vfs converts the read/write flags from 0/1/2 (read-only/write-only/rw) to
bit fields which are more easily testable.  But in doing so it corrupts the
other flags.

Fix FFLAGS and OFLAGS to preserve those other flags.  The test for a file
that is not readable or writable is dropped, since it is impossible to fail.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>

Switch to size_t type for ->bio_bcount in struct bio and clean up
virtio-blk signedness casts.

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

command line option -b/--bridge added

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>

Some trivial changes to tst-loadbalance.so. In particular, this benchmark
assumes it is run on two cpus, so don't do anything if that isn't true.

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

We had a different Linux version compiled into uname() (3.7.0) than
we had compiled into other code (via <linux/version.h>).

This patch makes them both pretend to be 3.7.0 - arbitrarily chosen
as the current Linux version at the time OSv was created. The new code
verifies with a static assertion that both files contain the same version,
so if they diverge, uname.c will fail compilation.

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

This patch adds a "osv runqueue" command to gdb, which shows the (sorted)
run queue of each CPU. Note that the run queue does not include the thread
currently running - just those which are ready to run.

This command is useful for debugging the scheduler and load balancer, but
is less generally useful than the "osv info threads" command, which lists
all threads, specially marking those which are runnable as well as those
which are running.

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

This patch begins to document OSv's native (non-Linux-compatible) C++ APIs
using Doxygen. With doxygen, functions, classes, and other APIs are
documented using comments inside the source code, similarly to the way
Javadoc is used in the Java world.

After this patch, running "doxygen" generates the documentation in HTML
form (and also ugly ones in LaTeX...) in the "doxyout" directory.
After running "doxygen" in the OSv top-level directory, open your browser to
file://.../doxyout/html/index.html

 to view this documentation.

This patch adds a doxygen configuration file, "Doxyfile", and documents
three functions in the osv namespace: osv::halt(), osv::poweroff(),
osv::halt().

The format of the resulting documentation is not perfect, but it's not
as bad as I feared, and also the documentation doesn't uglify the code
too much (it mainly impacts the header files), so I now believe it will
better for us than writing man pages (an avenue which I explored
previously).

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

This patch adds interrupt (by default ctrl-C) and quit (by default ctrl-\)
handling to the console driver, when the ISIG termios flag is enabled (and
this patch enables this flag by default). The application can change these
characters or disable ISIG with ioctls, exactly as in Unix.

The ^C character sends a SIGINT to the (only) process, and ^\ sends SIGQUIT.
By default both abort OSv, but when running Java we get a much more
interesting SIGQUIT handler - it shows a trace of all running threads
and other information.

Note that our line-discipline code currently sits in the console driver
(we do not have ptys yet), so it only applies to the console, not to
SSH connections or the likes.

Also note that by default (before the patch to issue #49), qemu will catch
the ^C and ^\ and won't even pass them to OSv, so apply the patch to #49
(or change the interrupt or quit characters) to see this feature working.

This patch relates to issue #53.

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

Fix memory_page_alloc tracepoint if untracked_alloc_page() uses the
early page allocator.

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

This patch adds page allocator support to memory analyzer post
processing script.

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

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

The tst-mmap.so test case noticed the following breakage in msync():

  Running mmap tests
  Assertion failed: msync(buf, 4096*9, MS_ASYNC) == 0
  (../../tests/tst-mmap.cc: main: 207)
  Aborted

The problem is that msync() uses the contains function which checks if
[start, end) is in a vma range but we really are interested in whether
the vma intersects with [start, end).

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

This Close issue #8 ""Make Java InetAddress.getHostName() works".

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Also convert it's header and change it's caller includes.

This patch is done so the libc resolver will be able to retrieve the dns from
OSv dns API.

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Make mincore() error-path compatible with Linux by requiring 'addr' to
be page aligned.

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

Linux requires mincore() addresses to be page aligned.

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

Fix vma::sync() to return zero for msync'ing anonymous vmas like Linux
does.

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

Fix tst-mmap test on Linux by passing MAP_PRIVATE as a mmap flag.

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

The mmap() function returns MAP_FAILED on error. Test for that.

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

Use C++ APIs to remove dependency to OSv internals so that we can run
the same test on Linux. Make the concurrency tests depend on OSv because
C++ doesn't have a API for binding threads to specific CPUs and we don't
want to clutter the test with pthread'isms.

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

This is in order to make it send Ctrl+C to the guest instead
of killing the VM. Leads to less surprises when working with
interactive shell inside OSv.

To suppress the new behavior run with --g or --with-graphic.

Relates to issue #49.

Signed-off-by: Tomasz Grabiec <tgrabiec@cloudius-systems.com>

In order to have consistent indentation.

Signed-off-by: Tomasz Grabiec <tgrabiec@cloudius-systems.com>

The new command prints arguments set in the image.

Signed-off-by: Tomasz Grabiec <tgrabiec@cloudius-systems.com>

This is needed to start the JVM with debugger interface.

Signed-off-by: Tomasz Grabiec <tgrabiec@cloudius-systems.com>

cosmetic: add missing linefeed

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

We use the RunJava Java class to run Java applications (both java.so
and the "java" CLI command use it). We used to have RunJava.class
uncompressed, in the /java directory, but this caused two problems:

1. Or noticed that having a directory (/java) on the classpath causes
   thousands of stat() calls when Java tries to look for all classes
   in this directory. With a jar, its contents are read only once.

2. The "java" CLI command (java.groovy) didn't work because apparently
   Groovy cannot deal with classes being in the top-level package.

   So this patch moves RunJava into the io.osv package, and put it into a jar
   /java/runjava.jar.

   Note that java.groovy is changed in a separate patch (because it's in
   a different sub-repository....)

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

Debug build was broken by it since boost::asio was used.

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

boost's asio.hpp module init() function was calling pthread_key_create which
tried to manipulate some libc/pthread.cc unitialized objects.

pthread_key_create then returned -ENOMEM so an exception was thrown by boost
causing the loader's premain() function to fail and the boot to loop.

This patch lower the priority of the initialization of the libc/pthread.cc
objects so they are ready when premain is calling the boost module init()
function.

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

This patch uses boost::asio::ip::address* to cleanup the core dhcp code.

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

bsd's ifconf conflicts with osv's; rename it.

We use the bsd version in <osv/ioctl.h>, since we currently don't support
the Linux-ABI variants of these ioctls.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Tested-By: Benoit Canet <benoit@irqsave.net>

The bsd ifaddr struct conflicts with the osv ifaddr struct, which is a
public interface.  Rename the bsd struct to avoid conflict.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Tested-By: Benoit Canet <benoit@irqsave.net>

Workaround a bytorder function conflict, and reconcile a declaration.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Tested-By: Benoit Canet <benoit@irqsave.net>