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This event is generated whenever a libguestfs function is called.
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pclose can return > 0 when the status of the command was non-zero.
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Note that errno is probably not set to a useful value here, so there
is not much point recording it.
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In particular pclose returns a status > 0 if the command fails.
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This refactors the code in test_qemu slightly to ensure that
FILE *fp is not leaked on error paths.
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The default event handler in libguestfs was simply writing all debug
output directly to stderr. However if the output contains
non-printable characters such as terminal control codes then these
would also be sent directly.
With newer SeaBIOS there is a lame attempt to implement a splash
screen using terminal control codes, thus when libguestfs tries to
display debugging output it would cause the screen to clear and debug
output to be lost.
This commit causes all non-printing characters to be escaped.
(\n and \r characters from the appliance are treated somewhat
specially).
Furthermore, instead of using write(2), use buffered stderr calls.
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This function was used to print the qemu and
febootstrap-supermin-helper command lines.
Unfortunately in the qemu case it was used incorrectly: it called the
internal debug function (ie. event API callback) from the forked qemu
subprocess, which meant that higher level event callbacks might have
been invoked from the child process.
To fix this, convert the qemu case into a new function called
print_qemu_command line which just prints the command line directly to
stderr. This is called after stderr has been redirected into the pipe
to the main process. Thus the qemu command line will be marshalled
into the event API along with other qemu and appliance output.
After fixing this, only one use of guestfs___print_timestamped_argv
remained, for printing the febootstrap-supermin-helper command line.
This is converted to a local function print_febootstrap_command_line.
Also print_febootstrap_command_line is now called before we fork
febootstrap-supermin-helper, so that messages no longer overlap.
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Previously any disk that had /autoexec.bat or /boot.ini or /ntldr
would be picked up as a candidate for a Windows root disk. If further
checking could not find any systemroot (eg. /windows) then this would
result in complete failure of inspection.
In particular, this got confused by Hp_recovery partitions which have
/autoexec.bat, but don't have a systemroot in one of the usual places
(they have /MiniNT instead).
What we do now is to properly investigate all possible systemroot
places before deciding this is a Windows systemroot, so the subsequent
failure cannot occur.
(Thanks to lorimar for reporting this bug).
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It always has done. The documentation was wrong.
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This updates the previous two commits.
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We don't use this library (it is only used in the daemon),
but we need to add this to make the linker happy.
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Combine the two Gnulib instances together.
Add checks from old daemon/configure.ac into configure.ac.
Fix daemon/Makefile.am so it is like a normal subdirectory
Makefile.am.
Because we are now using the replacement strerror_r function from
Gnulib (instead of the one from glibc directly), this requires a small
change to src/guestfs.c.
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This function is like qemu_supports, but allows us to grep
the help text using regular expressions.
Note the function is not used yet.
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This library is widely available in distros.
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If the blkid command returns 2, that means the value was not found.
Note that this changes the output of the vfs-type API when the
filesystem has no type (eg when it is empty). Previously this would
return an error. Now it returns empty string "".
We did not document this either way. Making it return empty string is
consistent with vfs-label and vfs-uuid.
This change broke list-filesystems, since that code was assuming that
vfs-type could only return a filesystem type or an error.
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This allows long transfers (FileIn and FileOut operations) to be
cancelled by calling the signal and thread safe guestfs_user_cancel
function.
Most of this commit consists of a multithreaded program that tests
user cancellation of uploads and downloads.
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If the pgroup flag is set in the handle, then the qemu and recovery
subprocesses are placed in separate process groups. The default is
false.
The purpose for setting up a process group is that ^C will not be
passed from the main process down to these processes (killing them).
This allows ^C and other keyboard events to be caught and handled in
the main process.
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Append content to the end of a file.
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This resizes a btrfs filesystem.
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This is a more comprehensive fix for RHBZ#685009. Add a new API which
allows the --force flag to be passed, allowing multiple NTFS resize
operations in a single session.
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List device mapper devices.
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Not that I'm paranoid about qemu breaking snapshots of anything like
that ...
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This API returns the guest's favicon if found, else an icon
representing the guest operating system. Currently supported by this
patch: Fedora, RHEL and derivatives, Debian (but not Ubuntu),
Windows XP, Windows 7.
This also updates virt-inspector to include an <icon> element
containing the icon in base64 encoding.
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The previous guestfs___download_to_tmp function did not handle
multiboot correctly. In particular it used the same cache name
for downloaded files from different roots, which could have caused
things like applications in each root to be confused.
This changes the function so that the cache filename is prefixed
with the root / fs number, eg. $tmpdir/0-Name instead of $tmpdir/Name.
This change also requires the function to return the new name, so
all places in the code which called this function had to be
updated.
This updates and fixes commit 3c1f762abed92f7a358f3bc93e3396d0606b18ad.
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The updated patch makes 'options' into an optional parameter.
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Make this error more informative, since it is a common error when the
appliance fails to start up.
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