dlm: Avoid LVB truncation
For lockspaces with an LVB length above 64 bytes, avoid truncating the LVB while exchanging it with another node in the cluster. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: David Teigland <teigland@redhat.com>
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@ -2038,8 +2038,8 @@ static void set_lvb_lock_pc(struct dlm_rsb *r, struct dlm_lkb *lkb,
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b = dlm_lvb_operations[lkb->lkb_grmode + 1][lkb->lkb_rqmode + 1];
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if (b == 1) {
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int len = receive_extralen(ms);
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if (len > DLM_RESNAME_MAXLEN)
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len = DLM_RESNAME_MAXLEN;
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if (len > r->res_ls->ls_lvblen)
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len = r->res_ls->ls_lvblen;
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memcpy(lkb->lkb_lvbptr, ms->m_extra, len);
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lkb->lkb_lvbseq = ms->m_lvbseq;
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}
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@ -3893,8 +3893,8 @@ static int receive_lvb(struct dlm_ls *ls, struct dlm_lkb *lkb,
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if (!lkb->lkb_lvbptr)
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return -ENOMEM;
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len = receive_extralen(ms);
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if (len > DLM_RESNAME_MAXLEN)
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len = DLM_RESNAME_MAXLEN;
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if (len > ls->ls_lvblen)
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len = ls->ls_lvblen;
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memcpy(lkb->lkb_lvbptr, ms->m_extra, len);
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}
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return 0;
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