Using automated replacement with sed and editing I have now replaced all
occurrences of close() with VIR_(FORCE_)CLOSE() except for one, of
course. Some replacements were straight forward, others I needed to pay
attention. I hope I payed attention in all the right places... Please
have a look. This should have at least solved one more double-close
error.

Suggested by danpb, as it's not up-to-date anymore and
lacks many functions that were added to libvirtd.

virPipeReadUntilEOF is used to read the stdout of exec'ed
and this could fail to capture the full output and read only
1024 bytes.
  The problem is that this is based on a poll loop, and in the
loop we read at most 1024 bytes per file descriptor, but we also
note in the loop if poll indicates that the process won't output
more than that on that fd by setting finished[i] = 1.
  The simplest way is that if we read a full buffer make sure
finished[i] is still 0 because we will need another pass in the
loop.

* src/util/util.h
* src/util/util.c
* src/libvirt_private.syms

Commit 9bd3cce0 added virFork and
virDriverLoadModule to libvirt_private.syms, but virFork didn't have
a body on Win32 and virDriverLoadModule was already correctly
exported conditional via libvirt_driver_modules.syms.

* .gnulib: Update to latest.
* bootstrap.conf (gnulib_modules): Add new termios module.
(gnulib_tool_option_extras): Make libtool usage explicit.
* src/util/util.c (includes): Gnulib now guarantees termios.h.
* bootstrap: Resync from gnulib.

virHexToBin will be used in the .vmx handling code.

This patch fixes a couple of complaints from valgrind when tickling libvirtd with SIGHUP.

The first two files contain fixes for memory leaks. The 3rd one initializes an uninitialized variable. The 4th one is another memory leak.

virDiskNameToIndex has a list of disk name prefixes that it uses in the
process of finding the disk's index. This list is missing "ubd" which
is the disk prefix used for UML domains.
Signed-off-by: NSoren Hansen <soren@linux2go.dk>

virDirCreate also previously returned 0 on success and errno on
failure. This makes it fit the recommended convention of returning 0
on success, -errno (ie a negative number) on failure.

virFileOperation previously returned 0 on success, or the value of
errno on failure. Although there are other functions in libvirt that
use this convention, the preferred (and more common) convention is to
return 0 on success and -errno (or simply -1 in some cases) on
failure. This way the check for failure is always (ret < 0).

* src/util/util.c - change virFileOperation and virFileOperationNoFork to
                    return -errno on failure.

* src/storage/storage_backend.c, src/qemu/qemu_driver.c
  - change the hook functions passed to virFileOperation to return
    -errno on failure.

Any error message raised after the process has forked needs
to be followed by virDispatchError, otherwise we have no chance of
ever seeing it. This was selectively done for hook functions in the past,
but really applies to all post-fork errors.

https://bugzilla.redhat.com/show_bug.cgi?id=608092

* src/util/util.c (virFileResolveLink): Use
canonicalize_file_name, rather than areadlink.

Otherwise this will segfault if PATH is not defined.

Reported by Emre Erenoglu

We've been running into a lot of situations where
virGetHostname() is returning "localhost", where a plain
gethostname() would have returned the correct thing.  This
is because virGetHostname() is *always* trying to canonicalize
the name returned from gethostname(), even when it doesn't
have to.

This patch changes virGetHostname so that if the value returned
from gethostname() is already FQDN or localhost, it returns
that string directly.  If the value returned from gethostname()
is a shortened hostname, then we try to canonicalize it.  If
that succeeds, we returned the canonicalized hostname.  If
that fails, and/or returns "localhost", then we just return
the original string we got from gethostname() and hope for
the best.

Note that after this patch it is up to clients to check whether
"localhost" is an allowed return value.  The only place
where it's currently not is in qemu migration.
Signed-off-by: NChris Lalancette <clalance@redhat.com>

Spurious / in a pool target path makes life difficult for apps using the
GetVolByPath, and doing other path based comparisons with pools. This
has caused a few issues for virt-manager users:

https://bugzilla.redhat.com/show_bug.cgi?id=494005
https://bugzilla.redhat.com/show_bug.cgi?id=593565

Add a new util API which removes spurious /, virFileSanitizePath. Sanitize
target paths when parsing pool XML, and for paths passed to GetVolByPath.

v2: Leading // must be preserved, properly sanitize path=/, sanitize
    away /./ -> /

v3: Properly handle starting ./ and ending /.

v4: Drop all '.' handling, just sanitize / for now.

Run this:
  git grep -l 'VIR_ERROR\s*("'|xargs perl -pi -e \
    's/(VIR_ERROR)\s*\((".*?"),/$1(_($2),/'

virFileResolveLink was returning a positive value on error,
thus confusing callers that assumed failure was < 0.  The
confusion is further evidenced by callers that would have
ended up calling virReportSystemError with a negative value
instead of a valid errno.

Fixes Red Hat BZ #591363.

* src/util/util.c (virFileResolveLink): Live up to documentation.
* src/qemu/qemu_security_dac.c
(qemuSecurityDACRestoreSecurityFileLabel): Adjust callers.
* src/security/security_selinux.c
(SELinuxRestoreSecurityFileLabel): Likewise.
* src/storage/storage_backend_disk.c
(virStorageBackendDiskDeleteVol): Likewise.

* configure.ac: Drop sys/wait.h check.
* src/libvirt.c (includes): Use header unconditionally.
* src/remote/remote_driver.c (includes): Likewise.
* src/storage/storage_backend.c (includes): Likewise.
* src/util/ebtables.c (includes): Likewise.
* src/util/hooks.c (includes): Likewise.
* src/util/iptables.c (includes): Likewise.
* src/util/util.c (includes): Likewise.

Gnulib can guarantee that pthread.h exists, but for now, it is a dummy
header with no support for most pthread_* functions.  Modify our
use of pthread to use function checks, rather than header checks,
to determine how much pthread support is present.

* bootstrap.conf (gnulib_modules): Add pthread.
* configure.ac: Drop all pthread.h checks.  Optimize function
checks.  Add check for pthread functions.
* src/Makefile.am (libvirt_lxc_LDADD): Ensure proper link.
* src/remote/remote_driver.c (remoteIOEventLoop): Depend on
pthread_sigmask, now that gnulib guarantees pthread.h.
* src/util/util.c (virFork): Likewise.
* src/util/threads.c (threads-pthread.c): Depend on
pthread_mutexattr_init, as a witness of full pthread support.
* src/util/threads.h (threads-pthread.h): Likewise.

Detected by clang.  POSIX requires that the second argument to
va_start be the name of the last variable; and in some implementations,
passing *path instead of path would dereference bogus memory instead
of pulling arguments off the stack.

* src/util/util.c (virBuildPathInternal): Use correct argument to
va_start.

Add an empty body for virCondWaitUntil and move virPipeReadUntilEOF
out of the '#ifndef WIN32' block, because it compiles fine with MinGW
in combination with gnulib.

Necessary on cygwin, where uid_t and gid_t are 4-byte long rather
than int, causing gcc -Wformat warnings.

* src/util/util.c (virFileOperationNoFork, virDirCreateNoFork)
(virFileOperation, virDirCreate, virGetUserEnt): Cast uid_t and
gid_t before passing to printf.
* .gitignore: Ignore Windows executables.

* src/util/util.c: as it's used for checking things like .iso suffixes

Cygwin has mntent.h but lacks getmntent_r. Update preprocessor
checks to catch this combination.

* src/util/util.c (virGetHostnameLocalhost): Add an sa_assert
to tell clang it's ok to dereference "info" after a non-failing
getaddrinfo call.

Reported by Paul Jenner

virParseVersionString uses virStrToLong_ui instead of sscanf.

This also fixes a bug in the UML driver, that always returned 0
as version number.

Introduce STRSKIP to check if a string has a certain prefix and
to skip this prefix.

used to read the data from virExec stdout/err file descriptors

* src/util/util.c src/util/util.h: not static anymore and export it
* src/libvirt_private.syms: allow access internally

* src/util/util.c (virDiskNameToIndex): Accept sda1, and map it to "sda".
I.e., accept and ignore any string of trailing digits.

virSetCloseExec and virExecDaemonize were missing a body on Windows.

Correctly disable pthread related code if pthread is not avialable,
in order to get it compile with MinGW on Windows.

Even if gnulib can provide stubs, it won't help that much. So just
replace affected util functions (virFileOperation and virDirCreate)
with stubs on Windows. Both functions aren't used on libvirt's
client side, so this is fine for MinGW builds.

Add dummy bodies for HAVE_GETPWUID_R and HAVE_MNTENT_H dependent
functions for MinGW builds.

* global: patch created by running:
for f in $(git ls-files '*.[ch]') ; do
    cppi $f > $f.t && mv $f.t $f
done

Prior to this patch, there was an inconsistent mix between GNU and C99.

For consistency, and potential portability to other compilers, stick
with the C99 vararg macro syntax.

* src/conf/cpu_conf.c (virCPUReportError): Use C99 rather than GNU
  vararg macro syntax.
* src/conf/domain_conf.c (virDomainReportError): Likewise.
* src/conf/domain_event.c (eventReportError): Likewise.
* src/conf/interface_conf.c (virInterfaceReportError): Likewise.
* src/conf/network_conf.c (virNetworkReportError): Likewise.
* src/conf/node_device_conf.h (virNodeDeviceReportError): Likewise.
* src/conf/secret_conf.h (virSecretReportError): Likewise.
* src/conf/storage_conf.h (virStorageReportError): Likewise.
* src/esx/esx_device_monitor.c (ESX_ERROR): Use C99 rather than
  GNU vararg macro syntax.
* src/esx/esx_driver.c (ESX_ERROR): Likewise.
* src/esx/esx_interface_driver.c (ESX_ERROR): Likewise.
* src/esx/esx_network_driver.c (ESX_ERROR): Likewise.
* src/esx/esx_secret_driver.c (ESX_ERROR): Likewise.
* src/esx/esx_storage_driver.c (ESX_ERROR): Likewise.
* src/esx/esx_util.c (ESX_ERROR): Likewise.
* src/esx/esx_vi.c (ESX_VI_ERROR): Likewise.
* src/esx/esx_vi_methods.c (ESX_VI_ERROR): Likewise.
* src/esx/esx_vi_types.c (ESX_VI_ERROR): Likewise.
* src/esx/esx_vmx.c (ESX_ERROR): Likewise.
* src/util/hostusb.c (usbReportError): Use C99 rather than GNU
  vararg macro syntax.
* src/util/json.c (virJSONError): Likewise.
* src/util/macvtap.c (ReportError): Likewise.
* src/util/pci.c (pciReportError): Likewise.
* src/util/stats_linux.c (virStatsError): Likewise.
* src/util/util.c (virUtilError): Likewise.
* src/util/xml.c (virXMLError): Likewise.
* src/xen/proxy_internal.c (virProxyError): Use C99 rather than
  GNU vararg macro syntax.
* src/xen/sexpr.c (virSexprError): Likewise.
* src/xen/xen_driver.c (xenUnifiedError): Likewise.
* src/xen/xen_hypervisor.c (virXenError): Likewise.
* src/xen/xen_inotify.c (virXenInotifyError): Likewise.
* src/xen/xend_internal.c (virXendError): Likewise.
* src/xen/xm_internal.c (xenXMError): Likewise.
* src/xen/xs_internal.c (virXenStoreError): Likewise.
* src/cpu/cpu.h (virCPUReportError): Use C99 rather than GNU
  vararg macro syntax.
* src/datatypes.c (virLibConnError): Likewise.
* src/interface/netcf_driver.c (interfaceReportError): Likewise.
* src/libvirt.c (virLibStreamError): Likewise.
* src/lxc/lxc_conf.h (lxcError): Likewise.
* src/network/bridge_driver.c (networkReportError): Likewise.
* src/nodeinfo.c (nodeReportError): Likewise.
* src/opennebula/one_conf.h (oneError): Likewise.
* src/openvz/openvz_conf.h (openvzError): Likewise.
* src/phyp/phyp_driver.c (PHYP_ERROR): Likewise.
* src/qemu/qemu_conf.h (qemuReportError): Likewise.
* src/remote/remote_driver.c (errorf): Likewise.
* src/security/security_driver.h (virSecurityReportError): Likewise.
* src/test/test_driver.c (testError): Likewise.
* src/uml/uml_conf.h (umlReportError): Likewise.
* src/vbox/vbox_driver.c (vboxError): Likewise.
* src/vbox/vbox_tmpl.c (vboxError): Likewise.

to saferead_lim, which interprets it as a size_t.
* src/util/util.c (virFileReadLimFD): Do not malfunction when
maxlen < -1.  Return -1,EINVAL in that case.  Handle maxlen==0
in the same manner.

Various safezero() implementations used either -1, errno or -errno
return values. This patch fixes them all to return -1 and set errno
appropriately.

There was also a bug in size parameter passed to safewrite() which could
result in an attempt to write gigabytes out of a megabyte buffer.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

* src/util/util.c: Include "ignore-value.h".
(virFork): We really do want to ignore pthread_sigmask failure.