static int
VGCDel(struct cmd_syndesc * as, void * rock)
{
afs_int32 code;
struct fssync_state state;
char * partName;
VolumeId parent, child;
struct cmd_item *ti;
SYNC_response res;
if (!(ti = as->parms[CUSTOM_PARMS_OFFSET+0].items)) { /* -partition */
return -1;
}
partName = ti->data;
if (!(ti = as->parms[CUSTOM_PARMS_OFFSET+1].items)) { /* -parent */
return -1;
}
parent = atoi(ti->data);
if (!(ti = as->parms[CUSTOM_PARMS_OFFSET+2].items)) { /* -child */
return -1;
}
child = atoi(ti->data);
common_prolog(as, &state);
fprintf(stderr, "calling FSYNC_VCGDel\n");
code = FSYNC_VGCDel(partName, parent, child, state.reason, &res);
debug_response(code, &res);
VDisconnectFS();
return 0;
}
/**
* destroy a volume disk header.
*
* @param[in] dp disk partition object
* @param[in] volid volume id
* @param[in] parent parent's volume id, 0 if unknown
*
* @return operation status
* @retval 0 success
*
* @note if parent is 0, the parent volume ID will be looked up from the
* fileserver
*
* @note for non-DAFS, parent is currently ignored
*/
afs_int32
VDestroyVolumeDiskHeader(struct DiskPartition64 * dp,
VolumeId volid,
VolumeId parent)
{
afs_int32 code = 0;
char path[MAXPATHLEN];
#ifdef AFS_DEMAND_ATTACH_FS
SYNC_response res;
#endif /* AFS_DEMAND_ATTACH_FS */
(void)afs_snprintf(path, sizeof(path),
"%s/" VFORMAT,
VPartitionPath(dp), afs_printable_uint32_lu(volid));
code = unlink(path);
if (code) {
Log("VDestroyVolumeDiskHeader: Couldn't unlink disk header, error = %d\n", errno);
goto done;
}
#ifdef AFS_DEMAND_ATTACH_FS
memset(&res, 0, sizeof(res));
if (!parent) {
FSSYNC_VGQry_response_t q_res;
code = FSYNC_VGCQuery(dp->name, volid, &q_res, &res);
if (code) {
Log("VDestroyVolumeDiskHeader: FSYNC_VGCQuery(%s, %lu) failed "
"with code %ld, reason %ld\n", dp->name,
afs_printable_uint32_lu(volid), afs_printable_int32_ld(code),
afs_printable_int32_ld(res.hdr.reason));
goto done;
}
parent = q_res.rw;
}
code = FSYNC_VGCDel(dp->name, parent, volid, FSYNC_WHATEVER, &res);
if (code) {
Log("VDestroyVolumeDiskHeader: FSYNC_VGCDel(%s, %lu, %lu) failed "
"with code %ld reason %ld\n", dp->name,
afs_printable_uint32_lu(parent),
afs_printable_uint32_lu(volid),
afs_printable_int32_ld(code),
afs_printable_int32_ld(res.hdr.reason));
}
#endif /* AFS_DEMAND_ATTACH_FS */
done:
return code;
}
/**
* write an existing volume disk header.
*
* @param[in] hdr volume disk header
* @param[in] dp disk partition object
*
* @return operation status
* @retval 0 success
* @retval ENOENT volume header doesn't exist
* @retval EIO failed to write volume header
*/
afs_int32
VWriteVolumeDiskHeader(VolumeDiskHeader_t * hdr,
struct DiskPartition64 * dp)
{
afs_int32 code;
#ifdef AFS_DEMAND_ATTACH_FS
VolumeDiskHeader_t oldhdr;
int delvgc = 0, addvgc = 0;
SYNC_response res;
/* first, see if anything with the volume IDs have changed; if so, we
* need to update the VGC */
code = VReadVolumeDiskHeader(hdr->id, dp, &oldhdr);
if (code == 0 && (oldhdr.id != hdr->id || oldhdr.parent != hdr->parent)) {
/* the vol id or parent vol id changed; need to delete the VGC entry
* for the old vol id/parent, and add the new one */
delvgc = 1;
addvgc = 1;
} else if (code) {
/* couldn't get the old header info; add the new header info to the
* VGC in case it hasn't been added yet */
addvgc = 1;
}
#endif /* AFS_DEMAND_ATTACH_FS */
code = _VWriteVolumeDiskHeader(hdr, dp, 0);
if (code) {
goto done;
}
#ifdef AFS_DEMAND_ATTACH_FS
if (delvgc) {
memset(&res, 0, sizeof(res));
code = FSYNC_VGCDel(dp->name, oldhdr.parent, oldhdr.id, FSYNC_WHATEVER, &res);
/* unknown vol id is okay; it just further suggests the old header
* data was bogus, which is fine since we're trying to fix it */
if (code && res.hdr.reason != FSYNC_UNKNOWN_VOLID) {
Log("VWriteVolumeDiskHeader: FSYNC_VGCDel(%s, %lu, %lu) "
"failed with code %ld reason %ld\n", dp->name,
afs_printable_uint32_lu(oldhdr.parent),
afs_printable_uint32_lu(oldhdr.id),
afs_printable_int32_ld(code),
afs_printable_int32_ld(res.hdr.reason));
}
}
if (addvgc) {
memset(&res, 0, sizeof(res));
code = FSYNC_VGCAdd(dp->name, hdr->parent, hdr->id, FSYNC_WHATEVER, &res);
if (code) {
Log("VWriteVolumeDiskHeader: FSYNC_VGCAdd(%s, %lu, %lu) "
"failed with code %ld reason %ld\n", dp->name,
afs_printable_uint32_lu(hdr->parent),
afs_printable_uint32_lu(hdr->id),
afs_printable_int32_ld(code),
afs_printable_int32_ld(res.hdr.reason));
}
}
#endif /* AFS_DEMAND_ATTACH_FS */
done:
return code;
}
