52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
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/****************************************************************
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* *
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* Copyright 2001, 2004 Sanchez Computer Associates, Inc. *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#include "cmidef.h"
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#include "eintr_wrappers.h"
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cmi_status_t cmi_read(struct CLB *lnk)
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{
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sigset_t oset;
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cmi_status_t status;
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struct NTD *tsk = lnk->ntd;
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int rc;
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CMI_DPRINT(("ENTER CMI_READ, AST 0x%x\n", lnk->ast));
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lnk->cbl = lnk->mbl;
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SIGPROCMASK(SIG_BLOCK, &tsk->mutex_set, &oset, rc);
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status = cmj_read_start(lnk);
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if (CMI_ERROR(status))
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{
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SIGPROCMASK(SIG_SETMASK, &oset, NULL, rc);
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CMI_DPRINT(("EXIT CMI_READ ERROR CODE %d\n", status));
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return status;
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}
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/*
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* At this point see if the I/O has completed
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* by probing the sta CLB field.
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*/
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cmj_housekeeping();
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while (lnk->sta == CM_CLB_READ && !lnk->ast)
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{
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sigsuspend(&oset);
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cmj_housekeeping();
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/* recover status */
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if (lnk->sta != CM_CLB_READ)
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status = CMI_CLB_IOSTATUS(lnk);
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}
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SIGPROCMASK(SIG_SETMASK, &oset, NULL, rc);
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CMI_DPRINT(("EXIT CMI_READ sta = %d\n", lnk->sta));
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return status;
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}
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