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/*
* Copyright (c) 2013 Red Hat.
* Copyright (c) 1995 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*/
#include "pmapi.h"
#include "impl.h"
#include "pmda.h"
#include "internal.h"
static int
lookuptext(int ident, int type, char **buffer)
{
int n;
__pmContext *ctxp;
__pmDSO *dp;
if ((n = pmWhichContext()) >= 0) {
int ctx = n;
ctxp = __pmHandleToPtr(ctx);
if (ctxp == NULL)
return PM_ERR_NOCONTEXT;
if (ctxp->c_type == PM_CONTEXT_HOST) {
PM_LOCK(ctxp->c_pmcd->pc_lock);
again:
n = __pmSendTextReq(ctxp->c_pmcd->pc_fd, __pmPtrToHandle(ctxp), ident, type);
if (n < 0)
n = __pmMapErrno(n);
else {
__pmPDU *pb;
int pinpdu;
pinpdu = n = __pmGetPDU(ctxp->c_pmcd->pc_fd, ANY_SIZE,
ctxp->c_pmcd->pc_tout_sec, &pb);
if (n == PDU_TEXT) {
int x_ident;
n = __pmDecodeText(pb, &x_ident, buffer);
}
else if (n == PDU_ERROR)
__pmDecodeError(pb, &n);
else if (n != PM_ERR_TIMEOUT)
n = PM_ERR_IPC;
if (pinpdu > 0)
__pmUnpinPDUBuf(pb);
/*
* Note: __pmDecodeText does not swab ident because it
* does not know whether it's a pmID or a pmInDom.
*/
if (n == 0 && (*buffer)[0] == '\0' && (type & PM_TEXT_HELP)) {
/* fall back to one-line, if possible */
free(*buffer);
type &= ~PM_TEXT_HELP;
type |= PM_TEXT_ONELINE;
goto again;
}
}
PM_UNLOCK(ctxp->c_pmcd->pc_lock);
}
else if (ctxp->c_type == PM_CONTEXT_LOCAL) {
if (PM_MULTIPLE_THREADS(PM_SCOPE_DSO_PMDA))
/* Local context requires single-threaded applications */
n = PM_ERR_THREAD;
else if ((dp = __pmLookupDSO(((__pmID_int *)&ident)->domain)) == NULL)
n = PM_ERR_NOAGENT;
else {
again_local:
if (dp->dispatch.comm.pmda_interface >= PMDA_INTERFACE_5)
dp->dispatch.version.four.ext->e_context = ctx;
n = dp->dispatch.version.any.text(ident, type, buffer, dp->dispatch.version.any.ext);
if (n == 0 && (*buffer)[0] == '\0' && (type & PM_TEXT_HELP)) {
/* fall back to one-line, if possible */
type &= ~PM_TEXT_HELP;
type |= PM_TEXT_ONELINE;
goto again_local;
}
if (n == 0) {
/*
* PMDAs don't malloc the buffer but the caller will
* free it, so malloc and copy
*/
*buffer = strdup(*buffer);
}
}
}
else {
/* assume PM_CONTEXT_ARCHIVE -- this is an error */
n = PM_ERR_NOTHOST;
}
PM_UNLOCK(ctxp->c_lock);
}
return n;
}
int
pmLookupText(pmID pmid, int level, char **buffer)
{
return lookuptext((int)pmid, level | PM_TEXT_PMID, buffer);
}
int
pmLookupInDomText(pmInDom indom, int level, char **buffer)
{
return lookuptext((int)indom, level | PM_TEXT_INDOM, buffer);
}
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