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This is a shorter and more convenient way to disable errors
temporarily across calls.
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New APIs: set-tmpdir, get-tmpdir, set-cachedir, get-cachedir.
The current code has evolved over time and has a number of problems:
(a) A single environment variable ($TMPDIR) controls the
location of several directories.
(b) It's hard for the library user to predict which directory
libguestfs will use, unless the user simulates the same internal steps
that libguestfs performs.
This commit fixes these issues.
(a) Now three environment variables control the location of all small
temporary files, and the appliance cache:
For temporary files: $LIBGUESTFS_TMPDIR or $TMPDIR or /tmp.
For the appliance cache: $LIBGUESTFS_CACHEDIR or $TMPDIR or /var/tmp.
The user can also set these directories explicitly through API calls
(guestfs_set_tmpdir and guestfs_set_cachedir).
(b) The user can also retrieve the actual directories that libguestfs
will use, by calling guestfs_get_tmpdir and guestfs_get_cachedir.
These functions are also used internally.
This commit also:
- reworks the internal tmpdir code
- removes the internal (undocumented) guestfs_tmpdir call (replacing
it with calls to the documented guestfs_get_tmpdir API instead)
- changes the ./run script to set LIBGUESTFS_TMPDIR and
LIBGUESTFS_CACHEDIR
- adds a test
- fixes a few places like libguestfs-make-fixed-appliance which
depended on $TMPDIR
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The 'windows_path' function was blindly copied from virt-cat. In
virt-cat, errors are checked by the caller to 'windows_path'. But
virt-edit lacks this check. Change the function in virt-edit to add a
check and exit on error.
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"h" option is not enabled in virt-cat, remove it.
Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
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Since our minimum supported version is now 1.16 and mount was fixed in
1.13.16, it is now safe to replace mount-options + empty options with
mount wherever it occurs.
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The new API splits orderly close into a two-step process:
if (guestfs_shutdown (g) == -1) {
/* handle the error, eg. qemu error */
}
guestfs_close (g);
Note that the explicit shutdown step is only necessary in the case
where you have made changes to the disk image and want to handle write
errors. Read the documentation for further information.
This change also:
- deprecates guestfs_kill_subprocess
- turns guestfs_kill_subprocess into the same as guestfs_shutdown
- changes guestfish and other tools to call shutdown + close
where necessary (not for read-only tools)
- updates documentation
- updates examples
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(RHBZ#788641)
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Update all copyright dates to 2012.
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Ensure that the drv structure is always zeroed on allocation.
Don't leak old drv->device when add_drives is called multiple times.
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