diff options
author | Chen Hanxiao <chenhanxiao@gmail.com> | 2018-08-31 14:22:50 +0800 |
---|---|---|
committer | Michael Roth <mdroth@linux.vnet.ibm.com> | 2018-10-30 16:48:49 -0500 |
commit | 0692b03ee135f6295168082199af55c6f289794d (patch) | |
tree | 25a3b4274ffd8453a955b1fbe5c4e238800556bb /qga/vss-win32/requester.cpp | |
parent | bad0227d3ac4f706673df9690b77840ed89dec40 (diff) | |
download | qemu-0692b03ee135f6295168082199af55c6f289794d.zip qemu-0692b03ee135f6295168082199af55c6f289794d.tar.gz qemu-0692b03ee135f6295168082199af55c6f289794d.tar.bz2 |
qga-win: add support for qmp_guest_fsfreeze_freeze_list
This patch add support for freeze specified fs.
The valid mountpoints list member are [1]:
The path of a mounted folder, for example, Y:\MountX\
A drive letter, for example, D:\
A volume GUID path of the form \\?\Volume{GUID}\,
where GUID identifies the volume
A UNC path that specifies a remote file share,
for example, \\Clusterx\Share1\
[1] https://docs.microsoft.com/en-us/windows/desktop/api/vsbackup/nf-vsbackup-ivssbackupcomponents-addtosnapshotset
Cc: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Chen Hanxiao <chenhanxiao@gmail.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Diffstat (limited to 'qga/vss-win32/requester.cpp')
-rw-r--r-- | qga/vss-win32/requester.cpp | 92 |
1 files changed, 66 insertions, 26 deletions
diff --git a/qga/vss-win32/requester.cpp b/qga/vss-win32/requester.cpp index 3d9c971..5378c55 100644 --- a/qga/vss-win32/requester.cpp +++ b/qga/vss-win32/requester.cpp @@ -234,7 +234,7 @@ out: } } -void requester_freeze(int *num_vols, ErrorSet *errset) +void requester_freeze(int *num_vols, void *mountpoints, ErrorSet *errset) { COMPointer<IVssAsync> pAsync; HANDLE volume; @@ -246,6 +246,7 @@ void requester_freeze(int *num_vols, ErrorSet *errset) WCHAR short_volume_name[64], *display_name = short_volume_name; DWORD wait_status; int num_fixed_drives = 0, i; + int num_mount_points = 0; if (vss_ctx.pVssbc) { /* already frozen */ *num_vols = 0; @@ -337,39 +338,73 @@ void requester_freeze(int *num_vols, ErrorSet *errset) goto out; } - volume = FindFirstVolumeW(short_volume_name, sizeof(short_volume_name)); - if (volume == INVALID_HANDLE_VALUE) { - err_set(errset, hr, "failed to find first volume"); - goto out; - } - for (;;) { - if (GetDriveTypeW(short_volume_name) == DRIVE_FIXED) { + if (mountpoints) { + PWCHAR volume_name_wchar; + for (volList *list = (volList *)mountpoints; list; list = list->next) { + size_t len = strlen(list->value) + 1; + size_t converted = 0; VSS_ID pid; - hr = vss_ctx.pVssbc->AddToSnapshotSet(short_volume_name, + + volume_name_wchar = new wchar_t[len]; + mbstowcs_s(&converted, volume_name_wchar, len, + list->value, _TRUNCATE); + + hr = vss_ctx.pVssbc->AddToSnapshotSet(volume_name_wchar, g_gProviderId, &pid); if (FAILED(hr)) { - WCHAR volume_path_name[PATH_MAX]; - if (GetVolumePathNamesForVolumeNameW( - short_volume_name, volume_path_name, - sizeof(volume_path_name), NULL) && *volume_path_name) { - display_name = volume_path_name; - } err_set(errset, hr, "failed to add %S to snapshot set", - display_name); - FindVolumeClose(volume); + volume_name_wchar); + delete volume_name_wchar; goto out; } - num_fixed_drives++; + num_mount_points++; + + delete volume_name_wchar; } - if (!FindNextVolumeW(volume, short_volume_name, - sizeof(short_volume_name))) { - FindVolumeClose(volume); - break; + + if (num_mount_points == 0) { + /* If there is no valid mount points, just exit. */ + goto out; } } - if (num_fixed_drives == 0) { - goto out; /* If there is no fixed drive, just exit. */ + if (!mountpoints) { + volume = FindFirstVolumeW(short_volume_name, sizeof(short_volume_name)); + if (volume == INVALID_HANDLE_VALUE) { + err_set(errset, hr, "failed to find first volume"); + goto out; + } + + for (;;) { + if (GetDriveTypeW(short_volume_name) == DRIVE_FIXED) { + VSS_ID pid; + hr = vss_ctx.pVssbc->AddToSnapshotSet(short_volume_name, + g_gProviderId, &pid); + if (FAILED(hr)) { + WCHAR volume_path_name[PATH_MAX]; + if (GetVolumePathNamesForVolumeNameW( + short_volume_name, volume_path_name, + sizeof(volume_path_name), NULL) && + *volume_path_name) { + display_name = volume_path_name; + } + err_set(errset, hr, "failed to add %S to snapshot set", + display_name); + FindVolumeClose(volume); + goto out; + } + num_fixed_drives++; + } + if (!FindNextVolumeW(volume, short_volume_name, + sizeof(short_volume_name))) { + FindVolumeClose(volume); + break; + } + } + + if (num_fixed_drives == 0) { + goto out; /* If there is no fixed drive, just exit. */ + } } hr = vss_ctx.pVssbc->PrepareForBackup(pAsync.replace()); @@ -435,7 +470,12 @@ void requester_freeze(int *num_vols, ErrorSet *errset) goto out; } - *num_vols = vss_ctx.cFrozenVols = num_fixed_drives; + if (mountpoints) { + *num_vols = vss_ctx.cFrozenVols = num_mount_points; + } else { + *num_vols = vss_ctx.cFrozenVols = num_fixed_drives; + } + return; out: @@ -449,7 +489,7 @@ out1: } -void requester_thaw(int *num_vols, ErrorSet *errset) +void requester_thaw(int *num_vols, void *mountpints, ErrorSet *errset) { COMPointer<IVssAsync> pAsync; |