| Commit message (Collapse) | Author | Age | Files | Lines |
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make all in the perl directory was missing a check that the library had been
built.
make check in the perl directory was missing a check that the appliance and test
images had been built.
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Previously, only the update.sh rule checked the daemon had been built. update.sh
is called directly from within make.sh, so in that path the dependency was never
checked. This adds the daemon dependency explicitly to the rebuild-from-scratch
path.
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This change ensure that making the appliance will always rebuild the daemon if
required.
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This is a nicer Perl wrapper around $g->available call.
Update the other code in Sys::Guestfs::Lib to use it before using
LVM, Augeas.
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The current groups are defined very conservatively using the
following criteria:
(a) Would be impossible to implement on Windows because of
sheer architectural differences (eg: mknod).
(b) Already optional (augeas, inotify).
(c) Not currently optional but not implemented on older RHEL and
Debian releases (ntfs-3g.probe, scrub, zerofree).
The optional groups I've defined according to these criteria are:
. augeas
. inotify
. linuxfsuuid
. linuxmodules
. linuxxattrs
. lvm2
. mknod
. ntfs3g
. scrub
. selinux
. zerofree
(Note that these choices don't prevent us from adding more
optional groups in future. On the other hand to avoid breaking
ABIs we would not wish to change the above groups).
The rest of this large commit is really just implementation:
Each optional function is classified using Optional "group"
flag in the generator.
The daemon has to implement a function
int optgroup_<name>_available (void);
for each optional group. Some of these functions are fixed at
compile time, and some do simple run-time tests.
The do_available implementation in the daemon looks up the correct
function in a table and runs it.
We document the optional groups in the guestfs(3) man page.
Also: I added a NOT_AVAILABLE macro in order to unify all the
existing places where we had a message equivalent to
"function __func__ is not available".
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Start a new API allowing groups of functions to be tested for
availability.
There are two reasons for this:
(1) If libguestfs is built with missing dependencies (eg. no Augeas lib)
then the corresponding functions are disabled in the appliance. Up till
now there has been no way to test for this except to speculatively
issue commands and check for errors.
(2) When we port the daemon to Win32 it is likely that major pieces of
functionality won't be available (eg. LVM support). This API gives
a way to test for that.
There is no change for existing clients: you still have to check for
errors from individual API calls.
For new clients, you will be able to test for availability of particular
APIs.
Usage scenario (A): An LVM editing tool which requires
both the LVM API and inotify in order to function at all:
char *apis[] = { "inotify", "lvm2", NULL };
r = guestfs_available (g, apis);
if (r == -1) {
/* print an error and exit */
}
Usage scenario (B): A general purpose tool which optionally provides
configuration file editing, but this can be disabled, the result
merely being reduced functionality:
char *apis[] = { "augeas", NULL };
r = guestfs_available (g, apis);
enable_config_edit_menus = r == 0;
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My patch was wrong.
I kept the sed transformation the same in the two places,
but it wasn't strict enough to also work on the file contents.
Sorry about that. This fixes it.
>From 93927cc7b9f63c414e5bfeb7eba393fde3295601 Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@redhat.com>
Date: Fri, 20 Nov 2009 16:23:17 +0100
Subject: [PATCH libguestfs] build: correct sed transformation to work also on .git-module-status
* autogen.sh: Use a more strict sed transformation so it works also
on the contents of .git-module-status, which has no prefix.
* cfg.mk (_submodule_hash): Use a stricter sed regexp.
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I ran autogen.sh, but then make was always failing like this:
$ make
cfg.mk:141: *** gnulib update required; run ./autogen.sh first. Stop.
Here's the fix:
>From f743f32079fea2e8a17c7f5b59305e584c75dba0 Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@redhat.com>
Date: Fri, 20 Nov 2009 14:29:55 +0100
Subject: [PATCH libguestfs] build: make autogen.sh update .git-module-status, as it should
* autogen.sh: Without this, "make" would always say "gnulib update
required; run ./autogen.sh first", even after you'd run autogen.sh
successfully.
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* hivex/hivexget.c (EXIT_NOT_FOUND): Define.
(main): Use exit (EXIT_NOT_FOUND), not "exit (2)".
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Convert by running these commands:
perl -pi -e 's/\b(usage ?)\(1\)/$1(EXIT_FAILURE)/' \
fish/fish.c fuse/guestmount.c
perl -pi -e 's/\b(usage ?)\(0\)/$1(EXIT_SUCCESS)/' \
fish/fish.c fuse/guestmount.c
* fish/fish.c (main): Replace 0/1 with EXIT_SUCCESS/EXIT_FAILURE.
* fuse/guestmount.c (main): Likewise.
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Convert all uses automatically, via these two commands:
git grep -l '\<exit *(1)' \
| grep -vEf .x-sc_prohibit_magic_number_exit \
| xargs --no-run-if-empty \
perl -pi -e 's/\b(exit ?)\(1\)/$1(EXIT_FAILURE)/'
git grep -l '\<exit *(0)' \
| grep -vEf .x-sc_prohibit_magic_number_exit \
| xargs --no-run-if-empty \
perl -pi -e 's/\b(exit ?)\(0\)/$1(EXIT_SUCCESS)/'
* .x-sc_prohibit_magic_number_exit: New file.
Edit (RWMJ): Don't change Java code.
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* daemon/realpath.c: Don't include "openat.h". not used.
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This is a partial fix for code in guestfsd.c where many of these
header files are missing on Win32.
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inotify: Make this optional on platforms that don't have this interface.
mknod, mkfifo etc.: Make these optional on non-Unix platforms.
readdir: If d_type field is missing on the platform, set the corresponding
field to 'u'.
stat: st_blocks and st_blksize are missing on non-Unix platforms, so
set these fields to -1 in the corresponding structures.
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The Fedora Windows cross-compiler 'mingw32-configure' script always
uses a configure cache. Ignore that file.
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Add:
open Unix
at the top of the generator, which means that we don't need to
prefix any 'Unix.foo' symbols (we can just use 'foo' instead).
Unfortunately the Unix module shadows one symbol in Pervasives
(the Pervasives module is opened by default in OCaml code). That
symbol is 'stdout'. So we replace this with 'Pervasives.stdout'
in two places. Still a net reduction in code size.
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ghc isn't clever enough not to stomp on itself when building dependencies. This
change makes the 1 dependency explicit.
It also adds a dependency on src/libguestfs.la.
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This change adds an explicit dependency on generator.ml for every file it
generates, except java files. Java is left for another time because it's
considerably trickier.
It also adds a build rule for src/libguestfs.la so it can be rebuilt as required
from other directories.
It does this by creating a top level make file, subdir-rules.mk, which can be
included from sub-directories. sub-directories need to define 'generator_built'
to include local files which are built by generator.ml, and they will be updated
automatically.
This fixes parallel make, and will automatically re-create generated files when
make is run from any directory.
It also fixes the problem which efad4f53 was targetting. Specifically,
src/guestfs_protocol.(c|h) had an erroneous dependency on stamp-generator, and
therefore generator.ml, despite not being directly created by it. This caused
them to be recreated every time generator.ml ran rather than only when
src/guestfs_protocol.x was updated, which cascaded into a daemon and therefore
appliance update.
This patch also changes the contents of the distribution tarball by including
files created by rpcgen.
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This commit acquires a lock on a file to prevent two parallel runs of
the generator from stomping on each other. The second run will wait
for the first to complete before starting.
The lock is acquired on the "HACKING" file because it's convenient --
we are already checking this file exists to make sure that we don't
start off in the wrong directory.
Tested by adding some artificial sleeps in the code to observe
locking behaviour between two parallel runs.
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Jim Meyering wrote:
>>From 6f128e90afb055f9899011c4a592eb289e678936 Mon Sep 17 00:00:00 2001
> From: Jim Meyering <meyering@redhat.com>
> Date: Thu, 19 Nov 2009 11:39:10 +0100
> Subject: [PATCH libguestfs] syntax-check: expand TABs in generator.ml
>
> * src/generator.ml: Expand leading TABs to spaces.
That was incomplete.
Please use the following instead.
With it, now, "make syntax-check" now passes once again.
>From 716a30d0b692972aac8fbea1fb7ad3318ab3a0d8 Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@redhat.com>
Date: Thu, 19 Nov 2009 11:39:10 +0100
Subject: [PATCH libguestfs] syntax-check: expand leading TABs
* src/generator.ml: Expand leading TABs to spaces.
* fuse/test-fuse.sh: Likewise.
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* .x-sc_trailing_blank: Exempt *.pod.
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This completely reverts commit efad4f53923dcca94613e193d6383bd032e70498.
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On RHEL/CentOS 5.4, udevadm settle command does not work. This didn't
affect us before, but now that we're using parted for partitioning, we
*do* need to wait for udev to settle (because parted isn't waiting for
this, unlike sfdisk).
This commit chooses the correct program to run.
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These macros don't exist on RHEL/CentOS 5.4. If the feature
is missing then just don't implement it in the FUSE layer.
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Print the uptime just before the init script runs the daemon, so we
have a good idea of how long the kernel boot + init script takes to run.
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(NB: The API / ABI doesn't actually change here - it's just made much
simpler to use).
The API for RBufferOut functions was unexpectedly hard to use in the
case where a zero-length buffer might be returned. For discussion on
this see:
https://www.redhat.com/archives/libguestfs/2009-November/thread.html#00115
This commit ensures that in the zero-length buffer case, the return
value is never NULL. Thus code is now able to just check if the return
value == NULL to indicate an error, which is simpler for all concerned.
The implementation of this is, however, more complex because we have
to be careful about this case inside both the daemon and the library
code, which is what this commit does.
This has passed a full round of tests.
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This script contains non-exhaustive tests for the system calls
implemented by guestmount.
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Error handling for the guestfs_pread call was incorrect, which
meant that empty files could produce spurious error messages.
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Display this output like a short manual page.
Don't put <..> around the parameters to the command.
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We need to invalidate both parameters, otherwise the old (moved)
file can appear that it still exists after the move.
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The parameters were swapped. We also need to invalidate the
cache for both parameters.
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The parameters were swapped, preventing symlinks from being created.
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