| Commit message (Collapse) | Author | Age | Files | Lines |
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This also adds a regression test.
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Fix these calls (see description in RHBZ#597112), but also
deprecate them since the new calls vfs_label and vfs_uuid can
work on any filesystem type.
This also adds a regression test for the original bug reported
in RHBZ#597112.
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These APIs generalize the existing 'get-e2label' and 'get-e2uuid'
calls, to provide calls which should be able to get the label
and UUID for most filesystem types. These use 'blkid' to do the
work.
I have tested that the blkid commands themselves work on RHEL 5.
(Suggested by Yufang Zhang).
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By killing the cache file, we make blkid work in situations such
as a just-created filesystem.
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Note that there is no change to the semantics of the code.
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guestfs_fallocate takes an integer for the length, effectively
limiting it to creating 1GB files. This new call takes an int64_t
for the length, but is otherwise identical.
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On Ubuntu <= Karmic, xz-utils was not packaged, and therefore
any xz-related tests would fail. Thus make this an optional
group so that we can test for this and avoid running the tests
if xz utils are not present.
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The guestfs_write call can be used to create small files with
arbitrary 8 bit content, including \0 bytes.
This replaces and deprecates write-file, which cannot be modified
to use BufferIn because of an unfortunate choice in the ABI: the
size parameter to write-file, if zero, means that the daemon tries
to calculate the length of the buffer using strlen. However this
fails if we pass a zero-length buffer using BufferIn because then
the daemon tries to do strlen on a (really) zero length buffer, not
even containing a terminating \0 character, thus segfaulting.
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This commit improves the error messages from the tar-in, tgz-in (etc)
commands by capturing the stderr from the tar command in a file and
sending that back in the error message.
The method used for the error file is primitive, and there is a case
for a more generic error file mechanism, but this will do for now.
Sample error messages after this change:
$ virt-tar -u /tmp/test1.img /tmp/not.tar /
tar_in: tar subcommand failed on directory: /: tar: This does not look like a tar archive
tar: Skipping to next header
tar: Exiting with failure status due to previous errors at /home/rjones/d/libguestfs/tools/virt-tar line 247.
$ virt-tar -u /tmp/test1.img /tmp/test.tar /
tar_in: tar subcommand failed on directory: /: tar: access.log: Cannot open: Read-only file system
tar: Exiting with failure status due to previous errors at /home/rjones/d/libguestfs/tools/virt-tar line 247.
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This commit shouldn't result in any change in the semantics
of the code.
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During a FileIn command (eg. upload, tar-in) if both sides
experience errors, then both sides could send cancel messages,
the result being lost synchronization.
The reason for the lost synch was because the daemon was ignoring
this case and sending an error message back which the library side
(which had cancelled) was not expecting.
Fix this by checking in the daemon for the case where the library
also cancels during daemon cancellation, and not sending an error
messages.
This also includes an enhanced regression test which checks for this
case.
This extends the original fix in
commit 5922d7084d6b43f0a1a15b664c7082dfeaf584d0.
More details can be found here:
https://bugzilla.redhat.com/show_bug.cgi?id=576879#c5
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Pengzhen Cao noticed that read-file would fail for files
larger than the protocol size; this is *not* the bug. However
it would also lose protocol synchronization after this.
The reason was that functions which return RBufferOut in the
generator must not 'touch' the *size_r parameter along error
return paths.
I fixed read-file and initrd-cat, and I checked that pread was
doing the right thing.
This also adds regression tests for read-file with various categories
of large file.
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(RHBZ#579608).
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The original idea (suggested by Al Viro) was to fork and chroot
into the sysroot and read the file from there. Because of the
separate process being chrooted, absolute links would be resolved
correctly. The slightly modified idea is to open the file in the
daemon process (but temporarily chrooted, so symlinks resolve
correctly), fork, and have the subprocess just be responsible for
copying the file. (Strictly speaking we don't need to fork, but
this implementation is simpler).
This commit just includes the changes needed to the command*()
functions in daemon/guestfsd.c and adds an absolute symlink to
the test ISO for testing it. Later commits will fix the broken
daemon commands themselves.
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The comment in the code describes it thus:
/* Note: abort is used in a few places along the error paths early
* in this function. This is because (a) cleaning up correctly is
* very complex at these places and (b) abort is used when a
* resource problem is indicated which would be due to much more
* serious issues - eg. memory or file descriptor leaks. We
* wouldn't expect fork(2) or pipe(2) to fail in normal
* circumstances.
*/
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Change the network configuration so everything is set using
some macros at the top of src/guestfs.c.
Also, rename the macros used in the daemon so they are not the
same. It was a very long time since these sets of macros had to
match the ones defined in src/guestfs.c, despite what the comment
said.
Note that this commit should not change the semantics of the
program at all.
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This also adds a regression test for this bug.
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Useful API for verifying the integrity of virtual machines.
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This shouldn't change the semantics of the program.
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Allow arbitrary files to be uploaded into the appliance, but
only when --enable-debug-command is enabled. This lets you
run shell scripts, like this:
><fs> debug-upload -<<EOF /tmp/script.sh 0700
#!/bin/sh -
# ...
EOF
><fs> debug sh "/tmp/script.sh"
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Modify the generator so that it can correctly handle early
cancellation for Pathname|Device|.. parameters. This fixes
the upload command, but consequently we need to fix the
parameters for tar_in and t?z_in commands. This should also
mean that 'win:' can now be used as the second argument of
tar_in and t?z_in commands in guestfish, whereas previously
this wouldn't have worked.
Adds a regression test for the original problem.
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chmod: Disallow negative mode, document mode affected by umask.
mkdir-mode: Disallow negative mode, document that filesystems
may interpret the mode in different ways.
mknod: Disallow negative mode, document mode affected by umask.
umask: Check the range of umask mask value carefully.
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Analogous to the usual 'checksum' call.
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These APIs flesh out further the partitioning API.
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Previously we used strtok. However this has the problem that
strtok considers multiple delimiter characters to be like a single
delimiter, eg. "1:::2" would be parsed the same as "1:2". In
other words, the previous code would skip over or fail if there
are empty fields.
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This allows us to make the RUN_PARTED macro do something else
along the error path, other than just returning -1.
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Implement vgscan to allow for a full rescan of all LVM
PVs, VGs and LVs.
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This implements the ntfsresize operation, using the external
program from ntfsprogs.
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