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XrdXrootdProtocol.cc
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XrdXrootdProtocol.cc
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/******************************************************************************/
/* */
/* X r d X r o o t d P r o t o c o l . c c */
/* */
/* (c) 2004 by the Board of Trustees of the Leland Stanford, Jr., University */
/* Produced by Andrew Hanushevsky for Stanford University under contract */
/* DE-AC02-76-SFO0515 with the Department of Energy */
/* */
/* This file is part of the XRootD software suite. */
/* */
/* XRootD 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 3 of the License, or (at your */
/* option) any later version. */
/* */
/* XRootD 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. */
/* */
/* You should have received a copy of the GNU Lesser General Public License */
/* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
/* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
/* */
/* The copyright holder's institutional names and contributor's names may not */
/* be used to endorse or promote products derived from this software without */
/* specific prior written permission of the institution or contributor. */
/******************************************************************************/
#include "XrdVersion.hh"
#include "XProtocol/XProtocol.hh"
#include "Xrd/XrdBuffer.hh"
#include "Xrd/XrdLink.hh"
#include "XrdOuc/XrdOucStream.hh"
#include "XrdOuc/XrdOucEnv.hh"
#include "XrdOuc/XrdOucUtils.hh"
#include "XrdSec/XrdSecProtect.hh"
#include "XrdSfs/XrdSfsFlags.hh"
#include "XrdSfs/XrdSfsInterface.hh"
#include "XrdSys/XrdSysAtomics.hh"
#include "XrdSys/XrdSysTimer.hh"
#include "XrdTls/XrdTls.hh"
#include "XrdXrootd/XrdXrootdAio.hh"
#include "XrdXrootd/XrdXrootdFile.hh"
#include "XrdXrootd/XrdXrootdFileLock.hh"
#include "XrdXrootd/XrdXrootdFileLock1.hh"
#include "XrdXrootd/XrdXrootdMonFile.hh"
#include "XrdXrootd/XrdXrootdMonitor.hh"
#include "XrdXrootd/XrdXrootdPio.hh"
#include "XrdXrootd/XrdXrootdProtocol.hh"
#include "XrdXrootd/XrdXrootdStats.hh"
#include "XrdXrootd/XrdXrootdTrace.hh"
#include "XrdXrootd/XrdXrootdXPath.hh"
/******************************************************************************/
/* G l o b a l s */
/******************************************************************************/
namespace XrdXrootd
{
XrdSysError eLog(0, "Xrootd");
XrdBuffManager *BPool;
XrdScheduler *Sched;
XrdXrootdStats *SI;
}
XrdOucTrace *XrdXrootdTrace;
/******************************************************************************/
/* S t a t i c M e m b e r s */
/******************************************************************************/
XrdXrootdXPath XrdXrootdProtocol::RPList;
XrdXrootdXPath XrdXrootdProtocol::RQList;
XrdXrootdXPath XrdXrootdProtocol::XPList;
XrdSfsFileSystem *XrdXrootdProtocol::osFS;
XrdSfsFileSystem *XrdXrootdProtocol::digFS = 0;
XrdXrootdFileLock *XrdXrootdProtocol::Locker;
XrdSecService *XrdXrootdProtocol::CIA = 0;
XrdSecProtector *XrdXrootdProtocol::DHS = 0;
XrdTlsContext *XrdXrootdProtocol::tlsCtx = 0;
XrdScheduler *XrdXrootdProtocol::Sched;
XrdBuffManager *XrdXrootdProtocol::BPool;
XrdSysError &XrdXrootdProtocol::eDest = XrdXrootd::eLog;
XrdXrootdStats *XrdXrootdProtocol::SI;
XrdXrootdJob *XrdXrootdProtocol::JobCKS = 0;
char *XrdXrootdProtocol::JobCKT = 0;
XrdOucTList *XrdXrootdProtocol::JobCKTLST= 0;
XrdOucReqID *XrdXrootdProtocol::PrepID = 0;
uint64_t XrdXrootdProtocol::fsFeatures = 0;
char *XrdXrootdProtocol::Notify = 0;
const char *XrdXrootdProtocol::myCName= 0;
int XrdXrootdProtocol::myCNlen= 0;
int XrdXrootdProtocol::hailWait;
int XrdXrootdProtocol::readWait;
int XrdXrootdProtocol::Port;
int XrdXrootdProtocol::Window;
int XrdXrootdProtocol::tlsPort = 0;
char XrdXrootdProtocol::isRedir = 0;
char XrdXrootdProtocol::JobLCL = 0;
char XrdXrootdProtocol::JobCKCGI=0;
XrdNetSocket *XrdXrootdProtocol::AdminSock= 0;
int XrdXrootdProtocol::hcMax = 28657; // const for now
int XrdXrootdProtocol::maxBuffsz;
int XrdXrootdProtocol::maxTransz = 262144; // 256KB
int XrdXrootdProtocol::as_maxperlnk = 8; // Max ops per link
int XrdXrootdProtocol::as_maxperreq = 8; // Max ops per request
int XrdXrootdProtocol::as_maxpersrv = 4096;// Max ops per server
int XrdXrootdProtocol::as_segsize = 131072;
int XrdXrootdProtocol::as_miniosz = 32768;
#ifdef __solaris__
int XrdXrootdProtocol::as_minsfsz = 1;
#else
int XrdXrootdProtocol::as_minsfsz = 8192;
#endif
int XrdXrootdProtocol::as_maxstalls = 5;
int XrdXrootdProtocol::as_force = 0;
int XrdXrootdProtocol::as_noaio = 0;
int XrdXrootdProtocol::as_nosf = 0;
int XrdXrootdProtocol::as_syncw = 0;
const char *XrdXrootdProtocol::myInst = 0;
const char *XrdXrootdProtocol::TraceID = "Protocol";
int XrdXrootdProtocol::RQLxist = 0;
int XrdXrootdProtocol::myPID = static_cast<int>(getpid());
int XrdXrootdProtocol::myRole = 0;
int XrdXrootdProtocol::myRolf = 0;
gid_t XrdXrootdProtocol::myGID = 0;
uid_t XrdXrootdProtocol::myUID = 0;
int XrdXrootdProtocol::myGNLen= 1;
int XrdXrootdProtocol::myUNLen= 1;
const char *XrdXrootdProtocol::myGName= "?";
const char *XrdXrootdProtocol::myUName= "?";
time_t XrdXrootdProtocol::keepT = 86400; // 24 hours
int XrdXrootdProtocol::PrepareLimit = -1;
bool XrdXrootdProtocol::PrepareAlt = false;
bool XrdXrootdProtocol::LimitError = true;
struct XrdXrootdProtocol::RD_Table XrdXrootdProtocol::Route[RD_Num];
int XrdXrootdProtocol::OD_Stall = 33;
bool XrdXrootdProtocol::OD_Bypass= false;
bool XrdXrootdProtocol::OD_Redir = false;
int XrdXrootdProtocol::usxMaxNsz= kXR_faMaxNlen;
int XrdXrootdProtocol::usxMaxVsz= kXR_faMaxVlen;
char *XrdXrootdProtocol::usxParms = 0;
char XrdXrootdProtocol::tlsCap = 0;
char XrdXrootdProtocol::tlsNot = 0;
/******************************************************************************/
/* P r o t o c o l M a n a g e m e n t S t a c k s */
/******************************************************************************/
XrdObjectQ<XrdXrootdProtocol>
XrdXrootdProtocol::ProtStack("ProtStack",
"xroot protocol anchor");
/******************************************************************************/
/* P r o t o c o l L o a d e r */
/* X r d g e t P r o t o c o l */
/******************************************************************************/
// This protocol can live in a shared library. The interface below is used by
// the protocol driver to obtain a copy of the protocol object that can be used
// to decide whether or not a link is talking a particular protocol.
//
XrdVERSIONINFO(XrdgetProtocol,xrootd);
extern "C"
{
XrdProtocol *XrdgetProtocol(const char *pname, char *parms,
XrdProtocol_Config *pi)
{
XrdProtocol *pp = 0;
const char *txt = "completed.";
// Put up the banner
//
pi->eDest->Say("Copr. 2012 Stanford University, xroot protocol "
kXR_PROTOCOLVSTRING, " version ", XrdVERSION);
pi->eDest->Say("++++++ xroot protocol initialization started.");
// Return the protocol object to be used if static init succeeds
//
if (XrdXrootdProtocol::Configure(parms, pi))
pp = (XrdProtocol *)new XrdXrootdProtocol();
else txt = "failed.";
pi->eDest->Say("------ xroot protocol initialization ", txt);
return pp;
}
}
/******************************************************************************/
/* P r o t o c o l P o r t D e t e r m i n a t i o n */
/* X r d g e t P r o t o c o l P o r t */
/******************************************************************************/
// This function is called early on to determine the port we need to use. The
// default is ostensibly 1094 but can be overidden; which we allow.
//
XrdVERSIONINFO(XrdgetProtocolPort,xrootd);
extern "C"
{
int XrdgetProtocolPort(const char *pname, char *parms, XrdProtocol_Config *pi)
{
// Figure out what port number we should return. In practice only one port
// number is allowed. However, we could potentially have a clustered port
// and several unclustered ports. So, we let this practicality slide.
//
if (pi->Port < 0) return 1094;
return pi->Port;
}
}
/******************************************************************************/
/* X r d P r o t o c o l X r o o t d C l a s s */
/******************************************************************************/
namespace
{
XrdSfsXioImpl SfsXioImpl(&XrdXrootdProtocol::Buffer,
&XrdXrootdProtocol::Reclaim);
}
/******************************************************************************/
/* C o n s t r u c t o r */
/******************************************************************************/
XrdXrootdProtocol::XrdXrootdProtocol()
: XrdProtocol("xroot protocol handler"),
XrdSfsXio(SfsXioImpl),
ProtLink(this), Entity(0), AppName(0)
{
Reset();
}
/******************************************************************************/
/* protected: g e t S I D */
/******************************************************************************/
unsigned int XrdXrootdProtocol::getSID()
{
static XrdSysMutex SidMutex;
static unsigned int Sid = 1;
unsigned int theSid;
// Generate unqiue number for this server instance
//
AtomicBeg(SidMutex);
theSid = AtomicInc(Sid);
AtomicEnd(SidMutex);
return theSid;
}
/******************************************************************************/
/* M a t c h */
/******************************************************************************/
#define TRACELINK lp
XrdProtocol *XrdXrootdProtocol::Match(XrdLink *lp)
{
static const int hsSZ = sizeof(ClientInitHandShake);
char hsbuff[hsSZ];
struct ClientInitHandShake *hsData = (ClientInitHandShake *)hsbuff;
static struct hs_response
{kXR_unt16 streamid;
kXR_unt16 status;
kXR_unt32 rlen; // Specified as kXR_int32 in doc!
kXR_unt32 pval; // Specified as kXR_int32 in doc!
kXR_unt32 styp; // Specified as kXR_int32 in doc!
} hsresp={0, 0, htonl(8), htonl(kXR_PROTOCOLVERSION),
(isRedir ? htonl((unsigned int)kXR_LBalServer)
: htonl((unsigned int)kXR_DataServer))};
XrdXrootdProtocol *xp;
int dlen, rc;
// Peek at the first 20 bytes of data
//
if ((dlen = lp->Peek(hsbuff, hsSZ, hailWait)) < hsSZ)
{if (dlen <= 0) lp->setEtext("handshake not received");
return (XrdProtocol *)0;
}
// Trace the data
//
// TRACEI(REQ, "received: " <<Trace->bin2hex(hsbuff,dlen));
// Verify that this is our protocol
//
hsData->fourth = ntohl(hsData->fourth);
hsData->fifth = ntohl(hsData->fifth);
if (hsData->first || hsData->second || hsData->third
|| hsData->fourth != 4 || hsData->fifth != ROOTD_PQ) return 0;
// Send the handshake response. We used optimize the subsequent protocol
// request sent with handshake but the protocol request is now overloaded.
//
rc = lp->Send((char *)&hsresp, sizeof(hsresp));
// Verify that our handshake response was actually sent
//
if (!rc)
{lp->setEtext("handshake failed");
return (XrdProtocol *)0;
}
// We can now read all 20 bytes and discard them (no need to wait for it)
//
if (lp->Recv(hsbuff, hsSZ) != hsSZ)
{lp->setEtext("reread failed");
return (XrdProtocol *)0;
}
// Get a protocol object off the stack (if none, allocate a new one)
//
if (!(xp = ProtStack.Pop())) xp = new XrdXrootdProtocol();
// Bind the protocol to the link and return the protocol
//
SI->Bump(SI->Count);
xp->Link = lp;
xp->Response.Set(lp);
strcpy(xp->Entity.prot, "host");
xp->Entity.host = (char *)lp->Host();
xp->Entity.addrInfo = lp->AddrInfo();
return (XrdProtocol *)xp;
}
/******************************************************************************/
/* P r o c e s s */
/******************************************************************************/
#undef TRACELINK
#define TRACELINK Link
int XrdXrootdProtocol::Process(XrdLink *lp) // We ignore the argument here
{
int rc;
kXR_unt16 reqID;
// Check if we are servicing a slow link
//
if (Resume)
{if (myBlen && (rc = getData("data", myBuff, myBlen)) != 0)
{if (rc < 0 && myAioReq) myAioReq->Recycle(-1);
return rc;
}
else if ((rc = (*this.*Resume)()) != 0) return rc;
else {Resume = 0; return 0;}
}
// Read the next request header
//
if ((rc=getData("request",(char *)&Request,sizeof(Request))) != 0) return rc;
// Check if we need to copy the request prior to unmarshalling it
//
reqID = ntohs(Request.header.requestid);
if (reqID != kXR_sigver && NEED2SECURE(Protect)(Request))
{memcpy(&sigReq2Ver, &Request, sizeof(ClientRequest));
sigNeed = true;
}
// Deserialize the data
//
Request.header.requestid = reqID;
Request.header.dlen = ntohl(Request.header.dlen);
Response.Set(Request.header.streamid);
TRACEP(REQ, "req=" <<XProtocol::reqName(reqID)
<<" dlen=" <<Request.header.dlen);
// Every request has an associated data length. It better be >= 0 or we won't
// be able to know how much data to read.
//
if (Request.header.dlen < 0)
{Response.Send(kXR_ArgInvalid, "Invalid request data length");
return Link->setEtext("protocol data length error");
}
// Process sigver requests now as they appear ahead of a request
//
if (reqID == kXR_sigver) return ProcSig();
// Read any argument data at this point, except when the request is a write.
// The argument may have to be segmented and we're not prepared to do that here.
//
if (reqID != kXR_write && reqID != kXR_pgwrite && Request.header.dlen)
{if (!argp || Request.header.dlen+1 > argp->bsize)
{if (argp) BPool->Release(argp);
if (!(argp = BPool->Obtain(Request.header.dlen+1)))
{Response.Send(kXR_ArgTooLong, "Request argument is too long");
return 0;
}
hcNow = hcPrev; halfBSize = argp->bsize >> 1;
}
argp->buff[Request.header.dlen] = '\0';
if ((rc = getData("arg", argp->buff, Request.header.dlen)))
{Resume = &XrdXrootdProtocol::Process2; return rc;}
}
// Continue with request processing at the resume point
//
return Process2();
}
/******************************************************************************/
/* p r i v a t e P r o c e s s 2 */
/******************************************************************************/
int XrdXrootdProtocol::Process2()
{
// If we are verifying requests, see if this request needs to be verified
//
if (sigNeed)
{const char *eText = "Request not signed";
if (!sigHere || (eText = Protect->Verify(sigReq,sigReq2Ver,argp->buff)))
{Response.Send(kXR_SigVerErr, eText);
TRACEP(REQ, "req=" <<XProtocol::reqName(Request.header.requestid)
<<" verification failed; " <<eText);
SI->Bump(SI->badSCnt);
return Link->setEtext(eText);
} else {
SI->Bump(SI->aokSCnt);
sigNeed = sigHere = false;
}
} else {
if (sigHere)
{TRACEP(REQ, "req=" <<XProtocol::reqName(Request.header.requestid)
<<" unneeded signature discarded.");
if (sigWarn)
{eDest.Emsg("Protocol","Client is needlessly signing requests.");
sigWarn = false;
}
SI->Bump(SI->ignSCnt);
sigHere = false;
}
}
// If the user is not yet logged in, restrict what the user can do
//
if (!Status)
switch(Request.header.requestid)
{case kXR_login: return do_Login();
case kXR_protocol: return do_Protocol();
case kXR_bind: return do_Bind();
default: Response.Send(kXR_InvalidRequest,
"Invalid request; user not logged in");
return Link->setEtext("request without login");
}
// Help the compiler, select the the high activity requests (the ones with
// file handles) in a separate switch statement. A special case exists for
// sync() which return with a callback, so handle it here.
//
switch(Request.header.requestid) // First, the ones with file handles
{case kXR_read: return do_Read();
case kXR_readv: return do_ReadV();
case kXR_write: return do_Write();
case kXR_writev: return do_WriteV();
case kXR_pgread: return do_PgRead();
case kXR_pgwrite: return do_PgWrite();
case kXR_sync: ReqID.setID(Request.header.streamid);
return do_Sync();
case kXR_close: ReqID.setID(Request.header.streamid);
return do_Close();
case kXR_truncate: ReqID.setID(Request.header.streamid);
if (!Request.header.dlen) return do_Truncate();
break;
case kXR_query: if (!Request.header.dlen) return do_Qfh();
break;
case kXR_chkpoint: return do_ChkPnt();
default: break;
}
// Now select the requests that do not need authentication
//
switch(Request.header.requestid)
{case kXR_protocol: return do_Protocol(); // dlen ignored
case kXR_ping: return do_Ping(); // dlen ignored
default: break;
}
// Force authentication at this point, if need be
//
if (Status & XRD_NEED_AUTH)
{int rc;
if (Request.header.requestid == kXR_auth) rc = do_Auth();
else {Response.Send(kXR_InvalidRequest,
"Invalid request; user not authenticated");
rc = -1;
}
if (tlsCtx) XrdTls::ClearErrorQueue();
return rc;
}
// Construct request ID as the following functions are async eligible
//
ReqID.setID(Request.header.streamid);
// Process items that don't need arguments but may have them
//
switch(Request.header.requestid)
{case kXR_stat: return do_Stat();
case kXR_endsess: return do_Endsess();
default: break;
}
// All remaining requests require an argument. Make sure we have one
//
if (!argp || !Request.header.dlen)
{Response.Send(kXR_ArgMissing, "Required argument not present");
return 0;
}
// Process items that keep own statistics
//
switch(Request.header.requestid)
{case kXR_open: return do_Open();
case kXR_gpfile: return do_gpFile();
default: break;
}
// Update misc stats count
//
SI->Bump(SI->miscCnt);
// Now process whatever we have
//
switch(Request.header.requestid)
{case kXR_chmod: return do_Chmod();
case kXR_dirlist: return do_Dirlist();
case kXR_fattr: return do_FAttr();
case kXR_locate: return do_Locate();
case kXR_mkdir: return do_Mkdir();
case kXR_mv: return do_Mv();
case kXR_query: return do_Query();
case kXR_prepare: return do_Prepare();
case kXR_rm: return do_Rm();
case kXR_rmdir: return do_Rmdir();
case kXR_set: return do_Set();
case kXR_statx: return do_Statx();
case kXR_truncate: return do_Truncate();
default: break;
}
// Whatever we have, it's not valid
//
Response.Send(kXR_InvalidRequest, "Invalid request code");
return 0;
}
/******************************************************************************/
/* P r o c S i g */
/******************************************************************************/
int XrdXrootdProtocol::ProcSig()
{
int rc;
// Check if we completed reading the signature and if so, we are done
//
if (sigRead)
{sigRead = false;
sigHere = true;
return 0;
}
// Verify that the hash is not longer that what we support and is present
//
if (Request.header.dlen <= 0
|| Request.header.dlen > (int)sizeof(sigBuff))
{Response.Send(kXR_ArgInvalid, "Invalid signature data length");
return Link->setEtext("signature data length error");
}
// Save relevant information for the next round
//
memcpy(&sigReq, &Request, sizeof(ClientSigverRequest));
sigReq.header.dlen = htonl(Request.header.dlen);
// Now read in the signature
//
sigRead = true;
if ((rc = getData("arg", sigBuff, Request.header.dlen)))
{Resume = &XrdXrootdProtocol::ProcSig; return rc;}
sigRead = false;
// All done
//
sigHere = true;
return 0;
}
/******************************************************************************/
/* R e c y c l e */
/******************************************************************************/
#undef TRACELINK
#define TRACELINK Link
void XrdXrootdProtocol::Recycle(XrdLink *lp, int csec, const char *reason)
{
char *sfxp, ctbuff[24], buff[128], Flags = (reason ? XROOTD_MON_FORCED : 0);
const char *What;
// Check for disconnect or unbind
//
if (Status == XRD_BOUNDPATH) {What = "unbind"; Flags |= XROOTD_MON_BOUNDP;}
else What = "disc";
// Document the disconnect or undind
//
if (lp)
{XrdSysTimer::s2hms(csec, ctbuff, sizeof(ctbuff));
if (reason && strcmp(reason, "hangup"))
{snprintf(buff, sizeof(buff), "%s (%s)", ctbuff, reason);
sfxp = buff;
} else sfxp = ctbuff;
eDest.Log(SYS_LOG_02, "Xeq", lp->ID, (char *)What, sfxp);
}
// If this is a bound stream then we cannot release the resources until
// the main stream closes this stream (i.e., lp == 0). On the other hand, the
// main stream will not be trying to do this if we are still tagged as active.
// So, we need to redrive the main stream to complete the full shutdown.
//
if (Status == XRD_BOUNDPATH && Stream[0])
{Stream[0]->streamMutex.Lock();
isDead = true;
if (isActive)
{isActive = false;
Stream[0]->Link->setRef(-1);
}
Stream[0]->streamMutex.UnLock();
if (lp) return; // Async close
}
// Release all appendages
//
Cleanup();
// If we are monitoring logins then we are also monitoring disconnects. We do
// this after cleanup so that close records can be generated before we cut a
// disconnect record. This then requires we clear the monitor object here.
// We and the destrcutor are the only ones who call cleanup and a deletion
// will call the monitor clear method. So, we won't leak memeory.
//
if (Monitor.Logins()) Monitor.Agent->Disc(Monitor.Did, csec, Flags);
if (Monitor.Fstat() ) XrdXrootdMonFile::Disc(Monitor.Did);
Monitor.Clear();
// Set fields to starting point (debugging mostly)
//
Reset();
// Push ourselves on the stack
//
if (Response.isOurs()) ProtStack.Push(&ProtLink);
}
/******************************************************************************/
/* S t a t G e n */
/******************************************************************************/
int XrdXrootdProtocol::StatGen(struct stat &buf, char *xxBuff, int xxLen,
bool xtnd)
{
const mode_t isReadable = (S_IRUSR | S_IRGRP | S_IROTH);
const mode_t isWritable = (S_IWUSR | S_IWGRP | S_IWOTH);
const mode_t isExecable = (S_IXUSR | S_IXGRP | S_IXOTH);
uid_t theuid;
gid_t thegid;
union {long long uuid; struct {int hi; int lo;} id;} Dev;
long long fsz;
int m, n, flags = 0;
// Get the right uid/gid
//
theuid = (Client && Client->uid ? Client->uid : myUID);
thegid = (Client && Client->gid ? Client->gid : myGID);
// Compute the unique id
//
Dev.id.lo = buf.st_ino;
Dev.id.hi = buf.st_dev;
// Compute correct setting of the readable flag
//
if (buf.st_mode & isReadable
&&((buf.st_mode & S_IRUSR && theuid == buf.st_uid)
|| (buf.st_mode & S_IRGRP && thegid == buf.st_gid)
|| buf.st_mode & S_IROTH)) flags |= kXR_readable;
// Compute correct setting of the writable flag
//
if (buf.st_mode & isWritable
&&((buf.st_mode & S_IWUSR && theuid == buf.st_uid)
|| (buf.st_mode & S_IWGRP && thegid == buf.st_gid)
|| buf.st_mode & S_IWOTH)) flags |= kXR_writable;
// Compute correct setting of the execable flag
//
if (buf.st_mode & isExecable
&&((buf.st_mode & S_IXUSR && theuid == buf.st_uid)
|| (buf.st_mode & S_IXGRP && thegid == buf.st_gid)
|| buf.st_mode & S_IXOTH)) flags |= kXR_xset;
// Compute the other flag settings
//
if (!Dev.uuid) flags |= kXR_offline;
if (S_ISDIR(buf.st_mode)) flags |= kXR_isDir;
else if (!S_ISREG(buf.st_mode)) flags |= kXR_other;
else{if (buf.st_mode & XRDSFS_POSCPEND) flags |= kXR_poscpend;
if ((buf.st_rdev & XRDSFS_RDVMASK) == 0)
{if (buf.st_rdev & XRDSFS_OFFLINE) flags |= kXR_offline;
if (buf.st_rdev & XRDSFS_HASBKUP) flags |= kXR_bkpexist;
}
}
fsz = static_cast<long long>(buf.st_size);
// Format the default response: <devid> <size> <flags> <mtime>
//
m = snprintf(xxBuff, xxLen, "%lld %lld %d %ld",
Dev.uuid, fsz, flags, buf.st_mtime);
// if (!xtnd || m >= xxLen) return xxLen;
//
// Format extended response: <ctime> <atime> <mode>
//
char *origP = xxBuff;
char *nullP = xxBuff + m++;
xxBuff += m; xxLen -= m;
n = snprintf(xxBuff, xxLen, "%ld %ld %04o ",
buf.st_ctime, buf.st_atime, buf.st_mode&07777);
if (n >= xxLen) return m;
xxBuff += n; xxLen -= n;
// Tack on owner
//
if (buf.st_uid == myUID)
{if (myUNLen >= xxLen) return m;
strcpy(xxBuff, myUName);
n = myUNLen;
} else {
if (!(n = XrdOucUtils::UidName(buf.st_uid,xxBuff,xxLen,keepT))) return m;
}
xxBuff += n;
*xxBuff++ = ' ';
xxLen -= (n+1);
// Tack on group
//
if (buf.st_gid == myGID)
{if (myGNLen >= xxLen) return m;
strcpy(xxBuff, myGName);
n = myGNLen;
} else {
if (!(n = XrdOucUtils::GidName(buf.st_gid,xxBuff,xxLen,keepT))) return m;
}
xxBuff += n+1;
// All done, return full response
//
*nullP = ' ';
return xxBuff - origP;
}
/******************************************************************************/
/* S t a t s */
/******************************************************************************/
int XrdXrootdProtocol::Stats(char *buff, int blen, int do_sync)
{
// Synchronize statistics if need be
//
if (do_sync)
{SI->statsMutex.Lock();
SI->readCnt += numReads;
cumReads += numReads; numReads = 0;
SI->prerCnt += numReadP;
cumReadP += numReadP; numReadP = 0;
SI->rvecCnt += numReadV;
cumReadV += numReadV; numReadV = 0;
SI->rsegCnt += numSegsV;
cumSegsV += numSegsV; numSegsV = 0;
SI->wvecCnt += numWritV;
cumWritV += numWritV; numWritV = 0;
SI->wsegCnt += numSegsW;
cumSegsW += numSegsW, numSegsW = 0;
SI->writeCnt += numWrites;
cumWrites+= numWrites;numWrites = 0;
SI->statsMutex.UnLock();
}
// Now return the statistics
//
return SI->Stats(buff, blen, do_sync);
}
/******************************************************************************/
/* X r d S f s X i o M e t h o d s */
/******************************************************************************/
/******************************************************************************/
/* Static: B u f f e r */
/******************************************************************************/
char *XrdXrootdProtocol::Buffer(XrdSfsXioHandle h, int *bsz)
{
XrdBuffer *xbP = (XrdBuffer *)h;
if (h)
{if (bsz) *bsz = xbP->bsize;
return xbP->buff;
}
if (bsz) *bsz = 0;
return 0;
}
/******************************************************************************/
/* C l a i m */
/******************************************************************************/
XrdSfsXioHandle XrdXrootdProtocol::Claim(const char *buff, int datasz,
int minasz)
{
// Qualify swap choice
//
if (minasz >= argp->bsize || datasz >= argp->bsize/2) return Swap(buff);
errno = 0;
return 0;
}
/******************************************************************************/
/* Static: R e c l a i m */
/******************************************************************************/
void XrdXrootdProtocol::Reclaim(XrdSfsXioHandle h)
{
if (h) BPool->Release((XrdBuffer *)h);
}
/******************************************************************************/
/* S w a p */
/******************************************************************************/
XrdSfsXioHandle XrdXrootdProtocol::Swap(const char *buff, XrdSfsXioHandle h)
{
XrdBuffer *oldBP = argp;
// Verify the context and linkage and if OK, swap buffers
//
if (Request.header.requestid != kXR_write) errno = ENOTSUP;
else if (buff != argp->buff) errno = EINVAL;
else {if (h)
{argp = (XrdBuffer *)h;
return oldBP;
} else {
argp = BPool->Obtain(argp->bsize);
if (argp) return oldBP;
argp = oldBP;
errno = ENOBUFS;
}
}
return 0;
}
/******************************************************************************/
/* P r i v a t e M e t h o d s */
/******************************************************************************/
/******************************************************************************/
/* C h e c k S u m */
/******************************************************************************/
int XrdXrootdProtocol::CheckSum(XrdOucStream *Stream, char **argv, int argc)
{
int rc, ecode;
// The arguments must have <name> <cstype> <path> <tident> [name] (argc >= 4)
//
if (argc < 4)
{Stream->PutLine("Internal error; not enough checksum args!");
return 8;
}
// Construct the error information
//
XrdOucEnv myEnv;
XrdOucErrInfo myInfo(argv[3], &myEnv);
// Add username, if present
//
if (argc > 4 && *argv[4]) myEnv.Put("request.name", argv[4]);
// Issue the checksum calculation (that's all we do here).
//
rc = osFS->chksum(XrdSfsFileSystem::csCalc, argv[1], argv[2], myInfo);
// Return result regardless of what it is
//
Stream->PutLine(myInfo.getErrText(ecode));
if (rc) {SI->errorCnt++;
if (ecode) rc = ecode;
}
return rc;
}
/******************************************************************************/
/* C l e a n u p */
/******************************************************************************/
void XrdXrootdProtocol::Cleanup()
{
XrdXrootdPio *pioP;
int i;
// Release any internal monitoring information
//
if (Entity.moninfo) {free(Entity.moninfo); Entity.moninfo = 0;}
// If we have a buffer, release it
//
if (argp) {BPool->Release(argp); argp = 0;}
// Notify the filesystem of a disconnect prior to deleting file tables
//
if (Status != XRD_BOUNDPATH) osFS->Disc(Client);
// Delete the FTab if we have it
//
if (FTab)
{FTab->Recycle(Monitor.Files() ? Monitor.Agent : 0);
FTab = 0;
}
// Handle parallel stream cleanup. The session stream cannot be closed if
// there is any queued activity on subordinate streams. A subordinate
// can either be closed from the session stream or asynchronously only if
// it is active. Which means they could be running while we are running.
//
if (isBound && Status != XRD_BOUNDPATH)
{streamMutex.Lock();
for (i = 1; i < maxStreams; i++)
if (Stream[i])
{Stream[i]->isBound = false; Stream[i]->Stream[0] = 0;
if (Stream[i]->isDead) Stream[i]->Recycle(0, 0, 0);
else Stream[i]->Link->Close();
Stream[i] = 0;
}
streamMutex.UnLock();
}
// Handle statistics
//
SI->statsMutex.Lock();
SI->readCnt += numReads; SI->writeCnt += numWrites;
SI->statsMutex.UnLock();
// Handle authentication protocol
//
if (AuthProt) {AuthProt->Delete(); AuthProt = 0;}
if (Protect) {Protect->Delete(); Protect = 0;}
// Handle parallel I/O appendages
//
while((pioP = pioFirst)) {pioFirst = pioP->Next; pioP->Recycle();}
while((pioP = pioFree )) {pioFree = pioP->Next; pioP->Recycle();}
// Handle writev appendage
//
if (wvInfo) {free(wvInfo); wvInfo = 0;}
// Release aplication name
//
if (AppName) {free(AppName); AppName = 0;}
}
/******************************************************************************/
/* g e t D a t a */
/******************************************************************************/
int XrdXrootdProtocol::getData(const char *dtype, char *buff, int blen)
{