URLClassLoader determines whether URL denotes a jar or directory
by checking the last character of the path.

Before:

   [/]% java -cp java Hello
   Uncaught Java exception:
   java.lang.ClassNotFoundException: Hello
       at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
       at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
       at java.security.AccessController.doPrivileged(Native Method)
       at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
       at io.osv.RunJava.loadClass(RunJava.java:175)
       at io.osv.RunJava.runClass(RunJava.java:115)
       at io.osv.RunJava.parseArgs(RunJava.java:81)
       at io.osv.RunJava.main(RunJava.java:27)

After:

   [/]% java -cp java Hello
   Hello, world.

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

Currently we call abort() if something is wrong whith
java.so command. Now that we allow to run processes from
the command line this may not be the best behavior because
a problem with starting a less import program will abort
the system:

  [/]% run java.so -cp java Hello
  run_elf(): running main() in the context of thread 0xffffc0000c30b010
  java.so: Can't create VM.
  Aborted

Instead of that we could just return and the system can
be still usable:

  [/]% run java.so -cp java Hello
  run_elf(): running main() in the context of thread 0xffffc0000c30b010
  java.so: Can't create VM.
  run: finished with exitcode 1

  [/]%

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

The new scheduling algorithm is based on floating point runtimes,
and I'd like to be able to tracepoints to debug it.

Adding floats and doubles is trivial - we just need to tell the C++
tracing code to use the character "f" for floats and "d" for doubles,
and Python (run in gdb when we use "osv trace") already knows how to unpack
values with these designations.

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

'make mgmt=0' will skip building the management code.  It is up to the
developer to ensure that a previously built tree is in place.

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

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

This also requires fixing paths to mgmt jars in build.mk
and usr.manifest as the version scheme has changed.

git log --format=short 7a4db4e759b..54f4810a7:

  commit 54f4810a76fabf955aeea34baefa336abf8b8467
  Author: Tomasz Grabiec <tgrabiec@cloudius-systems.com>

      Revert "supporting artifactory publish"

  commit 4abf771d146d6cde66f330e6b6ab6ececffb4cdd
  Author: Tomasz Grabiec <tgrabiec@cloudius-systems.com>

      mgmt/web: ditch jline-2.7 pulled by jruby-core

  commit 3863a3b58b661cd751314966cccb0f6c9835ed4a
  Author: Nadav Har'El <nyh@cloudius-systems.com>

      Moved RunJava to io.osv namespace

  commit be0717595f45d647062e7a41cc8dd38393c96547
  Author: Ronen Narkis <narkisr@gmail.com>

      supporting testing (jruby rake test does not work no matter what)

  commit 46e74f6bb886a0c62b06f08559fe2e44efdb8900
  Author: Ronen Narkis <narkisr@gmail.com>

      ignoring build

  commit 95ff3b70bae877d5d8cf0144853d1a201a0be333
  Author: Ronen Narkis <narkisr@gmail.com>

      verfying json existence and giving meaning full error

  commit 8b60c4a40aa4bcb7ce08bba600fd9cd6d63e1073
  Author: Ronen Narkis <narkisr@gmail.com>

      moving to three digit versioning in order to have a finer grained control on rel

  commit ffa7646388cec8d5b138ff4fc28a985c6344824c
  Author: Ronen Narkis <narkisr@gmail.com>

      supporting artifactory publish

  commit 8855112e2c867b4f855ed28ad9d9982c26bc56a3
  Author: Ronen Narkis <narkisr@gmail.com>

      clearing unused repo

  commit 3be79eb18b2be7bf1f28aaebd9905ac77945e4e4
  Author: Or Cohen <orc@fewbytes.com>

      Migrated ifconfig from previous JS console

  commit 287b014cf709e9c46692c59f87b70ebf056114b5
  Author: Or Cohen <orc@fewbytes.com>

      Migrated run command from previous CLI

  commit 0ffe064d30c1a812d7e853ee568ce45bfc16ed42
  Author: Or Cohen <orc@fewbytes.com>

      Added daemonizeIfNeeded helper method for commands

  commit 36951a86493c954a2e939648b5060260fac5b539
  Author: Or Cohen <orc@fewbytes.com>

      Moved ELFLoader from cloudius.cli to cloudius.util

As of commit a449b889 ("x64: Enable sleeping in fault context") it's now
safe for another thread to enter a fault handler on the same CPU.  Fix
exception guard to reflect that.

This is needed for demand paging where a page fault from another thread
can happen on the same CPU where a thread is sleeping in the page fault
handler.

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

Noticed a minor bug in the OSv dlfcn implementation.
According to the linux man pages, dladdr returns non-zero on success
and zero on error -> http://linux.die.net/man/3/dladdr



Signed-off-by: Dinakar Guniguntala <dino@linux.vnet.ibm.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

We want to tweak the include order for solaris (solaris -> bsd -> osv)
compared to osv (osv -> bsd) or bsd (bsd -> osv), so put these includes
in their own variable which can be nulled out.

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

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

Add some required solaris types.

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

We have _KERNEL defines scattered throughout the code, which makes
understanding it difficult.

Define it just once, and adjust the source to build.

We define it in an overridable variable, so that non-kernel imported code
can undo it.

Imported from FreeBSD 245655, no changes.

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

Import FreeBSD files, changeset 245655.

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

Imported with no change from FreeBSD 245655.

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

Imported with no change from FreeBSD 245655.

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

vfs mount/unmount related functionality.

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

Iterate over all inodes, droping directory entries and vnodes belonging
to the mount point.

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

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

In order to unmount, we need to drop all vnodes on a mount point, so we
need to find all directory entries pointing to them.

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

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

Similar to /etc/mnttab, but without going through the file system.

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

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

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

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

nmount() is a mount variant that works with key/value pairs to provide
options.  Implement it for osv.

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

zfs interprets the device parameter as a pool name, so don't insist on opening
it as a device.

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

Partition table fixes.

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

The partition offset can be > 32 bits, so allow for it in the calculation.

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

head=254 is legal, and the check also assumes that heads=255, which is not
a given.  Remove the check and trust the LBA.

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

Partitions table entries with cyl=0 or head=0 are legal, avoid false
positives.

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

Some vfs fixes needed for mkfs; already posted as part of the mkfs patchset.

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

Needed by libzfs.

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

open()'s prototype is traditionally open(const char*, int, ...) since
the third mode_t parameter is optional, and only needed if O_CREAT is
specified.

Change the definition to conform.

This allows the LFS64() macro to be used to define open64() with a
similar prototype.

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

Make vget() accept a const char*, and adjust various other functions that
it calls in the same way.  This makes it easier to convert vfs_mount.c to
C++.

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

For zfs.

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

We store the flags in a different format than fcntl() expects; perform the
needed conversions.

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

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>