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XrdXrootdConfig.cc
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XrdXrootdConfig.cc
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/******************************************************************************/
/* */
/* X r d X r o o t d C o n f i g . c c */
/* */
/* (c) 2010 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 Deprtment 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 <unistd.h>
#include <ctype.h>
#include <fcntl.h>
#include <string>
#include <string.h>
#include <stdio.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <vector>
#ifdef __solaris__
#include <sys/isa_defs.h>
#endif
#include <limits>
#include "XrdVersion.hh"
#include "XProtocol/XProtocol.hh"
#include "XrdSfs/XrdSfsFlags.hh"
#include "XrdSfs/XrdSfsInterface.hh"
#include "XrdNet/XrdNetOpts.hh"
#include "XrdNet/XrdNetSocket.hh"
#include "XrdOuc/XrdOuca2x.hh"
#include "XrdOuc/XrdOucEnv.hh"
#include "XrdOuc/XrdOucProg.hh"
#include "XrdOuc/XrdOucReqID.hh"
#include "XrdOuc/XrdOucString.hh"
#include "XrdOuc/XrdOucStream.hh"
#include "XrdOuc/XrdOucTrace.hh"
#include "XrdOuc/XrdOucUtils.hh"
#include "XrdSec/XrdSecLoadSecurity.hh"
#include "XrdSys/XrdSysError.hh"
#include "XrdSys/XrdSysHeaders.hh"
#include "XrdSys/XrdSysLogger.hh"
#include "XrdXrootd/XrdXrootdAdmin.hh"
#include "XrdXrootd/XrdXrootdAio.hh"
#include "XrdXrootd/XrdXrootdCallBack.hh"
#include "XrdXrootd/XrdXrootdFile.hh"
#include "XrdXrootd/XrdXrootdFileLock.hh"
#include "XrdXrootd/XrdXrootdFileLock1.hh"
#include "XrdXrootd/XrdXrootdGSReal.hh"
#include "XrdXrootd/XrdXrootdJob.hh"
#include "XrdXrootd/XrdXrootdMonitor.hh"
#include "XrdXrootd/XrdXrootdPrepare.hh"
#include "XrdXrootd/XrdXrootdProtocol.hh"
#include "XrdXrootd/XrdXrootdStats.hh"
#include "XrdXrootd/XrdXrootdTrace.hh"
#include "XrdXrootd/XrdXrootdTransit.hh"
#include "XrdXrootd/XrdXrootdXPath.hh"
#include "Xrd/XrdBuffer.hh"
#include "Xrd/XrdInet.hh"
/******************************************************************************/
/* P r o t o c o l C o m m a n d L i n e O p t i o n s */
/******************************************************************************/
/* This is the XRootd server. The syntax is:
xrootd [options]
options: [<xopt>] [-r] [-t] [-y] [path]
Where:
xopt are xrd specified options that are screened out.
-r This is a redirecting server.
-t This server is a redirection target.
-y This server is a proxy server.
path Export path. Any number of paths may be specified.
By default, only '/tmp' is exported.
*/
/******************************************************************************/
/* G l o b a l s */
/******************************************************************************/
XrdOucString *XrdXrootdCF;
extern XrdOucTrace *XrdXrootdTrace;
XrdXrootdPrepare *XrdXrootdPrepQ;
const char *XrdXrootdInstance;
int XrdXrootdPort;
extern XrdSfsFileSystem *XrdXrootdloadFileSystem(XrdSysError *,
XrdSfsFileSystem *,
const char *,
const char *, XrdOucEnv *);
extern XrdSfsFileSystem *XrdSfsGetDefaultFileSystem
(XrdSfsFileSystem *nativeFS,
XrdSysLogger *Logger,
const char *configFn,
XrdOucEnv *EnvInfo);
/******************************************************************************/
/* L o c a l S t a t i c s */
/******************************************************************************/
namespace
{
char *digParm = 0;
char *FSLib[2] = {0,0};
std::vector<std::string> FSLPath;
char *gpfLib = 0;// Normally zero for default
char *gpfParm = 0;
char *SecLib;
}
/******************************************************************************/
/* C o n f i g u r e */
/******************************************************************************/
int XrdXrootdProtocol::Configure(char *parms, XrdProtocol_Config *pi)
{
/*
Function: Establish configuration at load time.
Input: None.
Output: 0 upon success or !0 otherwise.
*/
extern XrdSfsFileSystem *XrdDigGetFS
(XrdSfsFileSystem *nativeFS,
XrdSysLogger *Logger,
const char *configFn,
const char *theParms);
extern int optind, opterr;
XrdOucEnv xrootdEnv;
XrdXrootdXPath *xp;
char *adminp, *rdf, *bP, *tmp, c, buff[1024];
int i, n, deper = 0;
// Copy out the special info we want to use at top level
//
eDest.logger(pi->eDest->logger());
XrdXrootdTrace = new XrdOucTrace(&eDest);
SI = new XrdXrootdStats(pi->Stats);
Sched = pi->Sched;
BPool = pi->BPool;
hailWait = pi->hailWait;
readWait = pi->readWait;
Port = pi->Port;
myInst = pi->myInst;
Window = pi->WSize;
tlsPort = pi->tlsPort;
tlsCtx = pi->tlsCtx;
XrdXrootdCF = pi->totalCF;
// Record globally accessible values
//
XrdXrootdInstance = pi->myInst;
XrdXrootdPort = pi->Port;
// Set the callback object static areas now!
//
XrdXrootdCallBack::setVals(&eDest, SI, Sched, Port);
// Prohibit this program from executing as superuser
//
if (geteuid() == 0)
{eDest.Emsg("Config", "Security reasons prohibit xrootd running as "
"superuser; xrootd is terminating.");
_exit(8);
}
// Process any command line options
//
opterr = 0; optind = 1;
if (pi->argc > 1 && '-' == *(pi->argv[1]))
while ((c=getopt(pi->argc,pi->argv,"mrst")) && ((unsigned char)c != 0xff))
{ switch(c)
{
case 'r': deper = 1;
XrdOucEnv::Export("XRDREDIRECT", "R");
break;
case 'm': XrdOucEnv::Export("XRDREDIRECT", "R");
break;
case 't': deper = 1;
XrdOucEnv::Export("XRDRETARGET", "1");
break;
case 's': XrdOucEnv::Export("XRDRETARGET", "1");
break;
case 'y': XrdOucEnv::Export("XRDREDPROXY", "1");
break;
default: eDest.Say("Config warning: ignoring invalid option '",pi->argv[optind-1],"'.");
}
}
// Check for deprecated options
//
if (deper) eDest.Say("Config warning: '-r -t' are deprecated; use '-m -s' instead.");
// Pick up exported paths
//
for ( ; optind < pi->argc; optind++) xexpdo(pi->argv[optind]);
// Pre-initialize some i/o values. Note that we now set maximum readv element
// transfer size to the buffer size (before it was a reasonable 256K).
//
if (!(as_miniosz = as_segsize/2)) as_miniosz = as_segsize;
n = (pi->theEnv ? pi->theEnv->GetInt("MaxBuffSize") : 0);
maxTransz = maxBuffsz = (n ? n : BPool->MaxSize());
memset(Route, 0, sizeof(Route));
// Now process and configuration parameters
//
rdf = (parms && *parms ? parms : pi->ConfigFN);
if (rdf && Config(rdf)) return 0;
if (pi->DebugON) XrdXrootdTrace->What = TRACE_ALL;
// Check if we are exporting a generic object name
//
if (XPList.Opts() & XROOTDXP_NOSLASH)
{eDest.Say("Config exporting ", XPList.Path(n)); n += 2;}
else n = 0;
// Check if we are exporting anything
//
if (!(xp = XPList.Next()) && !n)
{XPList.Insert("/tmp"); n = 8;
eDest.Say("Config warning: only '/tmp' will be exported.");
} else {
while(xp) {eDest.Say("Config exporting ", xp->Path(i));
n += i+2; xp = xp->Next();
}
}
// Export the exports
//
bP = tmp = (char *)malloc(n);
if (XPList.Opts() & XROOTDXP_NOSLASH)
{strcpy(bP, XPList.Path(i)); bP += i, *bP++ = ' ';}
xp = XPList.Next();
while(xp) {strcpy(bP, xp->Path(i)); bP += i; *bP++ = ' '; xp = xp->Next();}
*(bP-1) = '\0';
XrdOucEnv::Export("XRDEXPORTS", tmp); free(tmp);
// Initialize the security system if this is wanted
//
if (!ConfigSecurity(xrootdEnv, pi->ConfigFN)) return 0;
// Set up the network for self-identification and display it
//
pi->NetTCP->netIF.Port(Port);
pi->NetTCP->netIF.Display("Config ");
// Establish our specific environment that will be passed along
//
xrootdEnv.PutPtr("XrdInet*", (void *)(pi->NetTCP));
xrootdEnv.PutPtr("XrdNetIF*", (void *)(&(pi->NetTCP->netIF)));
xrootdEnv.PutPtr("XrdScheduler*", Sched);
// Copy over the xrd environment which contains plugin argv's
//
if (pi->theEnv) xrootdEnv.PutPtr("xrdEnv*", pi->theEnv);
// Initialize monitoring (it won't do anything if it wasn't enabled)
//
if (!XrdXrootdMonitor::Init(Sched, &eDest, pi->myName, pi->myProg,
myInst, Port)) return 0;
// Config g-stream objects, as needed. This needs to be done before we
// load any plugins but after we initialize monitoring.
//
ConfigGStream(xrootdEnv);
// Get the filesystem to be used and its features
//
if (!ConfigFS(xrootdEnv, pi->ConfigFN)) return 0;
fsFeatures = osFS->Features();
// Check if the file system includes a custom prepare handler as this will
// affect how we handle prepare requests.
//
if (fsFeatures & XrdSfs::hasPRP2 || xrootdEnv.Get("XRD_PrepHandler"))
PrepareAlt = true;
// Check if the diglib should be loaded. We only support the builtin one. In
// the future we will have to change this code to be like the above.
//
if (digParm)
{TRACE(DEBUG, "Loading dig filesystem builtin");
digFS = XrdDigGetFS(osFS, eDest.logger(), pi->ConfigFN, digParm);
if (!digFS) eDest.Emsg("Config","Unable to load digFS; "
"remote debugging disabled!");
}
// Check if we are going to be processing checksums locally
//
if (JobCKT && JobLCL)
{XrdOucErrInfo myError("Config");
XrdOucTList *tP = JobCKTLST;
do {if (osFS->chksum(XrdSfsFileSystem::csSize,tP->text,0,myError))
{eDest.Emsg("Config",tP->text,"checksum is not natively supported.");
return 0;
}
tP->ival[1] = myError.getErrInfo();
tP = tP->next;
} while(tP);
}
// Initialiaze for AIO
//
if (getenv("XRDXROOTD_NOAIO")) as_noaio = 1;
else if (!as_noaio) XrdXrootdAioReq::Init(as_segsize, as_maxperreq, as_maxpersrv);
else eDest.Say("Config warning: asynchronous I/O has been disabled!");
// Create the file lock manager
//
Locker = (XrdXrootdFileLock *)new XrdXrootdFileLock1();
XrdXrootdFile::Init(Locker, &eDest, as_nosf == 0);
if (as_nosf) eDest.Say("Config warning: sendfile I/O has been disabled!");
// Schedule protocol object cleanup (also advise the transit protocol)
//
ProtStack.Set(pi->Sched, XrdXrootdTrace, TRACE_MEM);
n = (pi->ConnMax/3 ? pi->ConnMax/3 : 30);
ProtStack.Set(n, 60*60);
XrdXrootdTransit::Init(pi->Sched, n, 60*60);
// Initialize the request ID generation object
//
PrepID = new XrdOucReqID(pi->urAddr, (int)Port);
// Initialize for prepare processing
//
XrdXrootdPrepQ = new XrdXrootdPrepare(&eDest, pi->Sched, PrepareAlt);
sprintf(buff, "%%s://%s:%d/&L=%%d&U=%%s", pi->myName, pi->Port);
Notify = strdup(buff);
// Set the redirect flag if we are a pure redirector
//
int tlsFlags = myRole & kXR_tlsAny;
myRole = kXR_isServer; myRolf = kXR_DataServer;
if ((rdf = getenv("XRDREDIRECT"))
&& (!strcmp(rdf, "R") || !strcmp(rdf, "M")))
{isRedir = *rdf;
myRole = kXR_isManager; myRolf = kXR_LBalServer;
if (!strcmp(rdf, "M")) myRole |=kXR_attrMeta;
}
myRole |= tlsFlags;
if (getenv("XRDREDPROXY")) myRole |=kXR_attrProxy;
// Check if we are redirecting anything
//
if ((xp = RPList.Next()))
{int k;
char buff[2048], puff[1024];
do {k = xp->Opts();
if (Route[k].Host[0] == Route[k].Host[1]
&& Route[k].Port[0] == Route[k].Port[1]) *puff = 0;
else sprintf(puff, "%%%s:%d", Route[k].Host[1], Route[k].Port[1]);
sprintf(buff," to %s:%d%s",Route[k].Host[0],Route[k].Port[0],puff);
eDest.Say("Config redirect static ", xp->Path(), buff);
xp = xp->Next();
} while(xp);
}
if ((xp = RQList.Next()))
{int k;
const char *cgi1, *cgi2;
char buff[2048], puff[1024], xCgi[RD_Num] = {0};
if (isRedir) {cgi1 = "+"; cgi2 = getenv("XRDCMSCLUSTERID");}
else {cgi1 = ""; cgi2 = pi->myName;}
myCNlen = snprintf(buff, sizeof(buff), "%s%s", cgi1, cgi2);
myCName = strdup(buff);
do {k = xp->Opts();
if (Route[k].Host[0] == Route[k].Host[1]
&& Route[k].Port[0] == Route[k].Port[1]) *puff = 0;
else sprintf(puff, "%%%s:%d", Route[k].Host[1], Route[k].Port[1]);
sprintf(buff," to %s:%d%s",Route[k].Host[0],Route[k].Port[0],puff);
eDest.Say("Config redirect enoent ", xp->Path(), buff);
if (!xCgi[k] && cgi2)
{bool isdup = Route[k].Host[0] == Route[k].Host[1]
&& Route[k].Port[0] == Route[k].Port[1];
for (i = 0; i < 2; i++)
{n = snprintf(buff,sizeof(buff), "%s?tried=%s%s",
Route[k].Host[i], cgi1, cgi2);
free(Route[k].Host[i]); Route[k].Host[i] = strdup(buff);
Route[k].RDSz[i] = n;
if (isdup) {Route[k].Host[1] = Route[k].Host[0];
Route[k].RDSz[1] = n; break;
}
}
}
xCgi[k] = 1;
xp = xp->Next();
} while(xp);
}
// Add all jobs that we can run to the admin object
//
if (JobCKS) XrdXrootdAdmin::addJob("chksum", JobCKS);
// Establish the path to be used for admin functions. We will loose this
// storage upon an error but we don't care because we'll just exit.
//
adminp = XrdOucUtils::genPath(pi->AdmPath, 0, ".xrootd");
// Setup the admin path (used in all roles).
//
if (!(AdminSock = XrdNetSocket::Create(&eDest, adminp, "admin", pi->AdmMode))
|| !XrdXrootdAdmin::Init(&eDest, AdminSock)) return 0;
// Setup pid file
//
PidFile();
// Indicate whether or not we support extened attributes
//
{XrdOucEnv myEnv;
XrdOucErrInfo eInfo("", &myEnv);
char buff[128];
if (osFS->FAttr(0, eInfo, 0) == SFS_OK)
{usxMaxNsz = myEnv.GetInt("usxMaxNsz");
if (usxMaxNsz < 0) usxMaxNsz = 0;
usxMaxVsz = myEnv.GetInt("usxMaxVsz");
if (usxMaxVsz < 0) usxMaxVsz = 0;
snprintf(buff, sizeof(buff), "%d %d", usxMaxNsz, usxMaxVsz);
usxParms = strdup(buff);
} else {
usxMaxNsz = 0;
usxMaxVsz = 0;
usxParms = strdup("0 0");
}
}
// Finally, check if we really need to be in bypass mode if it is set
//
if (OD_Bypass)
{const char *penv = getenv("XRDXROOTD_PROXY");
if (!penv || *penv != '=')
{OD_Bypass = false;
eDest.Say("Config warning: 'fsoverload bypass' ignored; "
"not a forwarding proxy.");
}
}
// Add any additional features
//
if (fsFeatures & XrdSfs::hasPOSC) myRole |= kXR_supposc;
if (fsFeatures & XrdSfs::hasPGRW) myRole |= kXR_suppgrw;
if (fsFeatures & XrdSfs::hasGPF) myRole |= kXR_supgpf;
if (fsFeatures & XrdSfs::hasGPFA && myRole & kXR_supgpf)
myRole |= kXR_anongpf;
// Finally note whether or not we have TLS enabled
//
if (tlsCtx) myRole |= kXR_haveTLS;
// Return success
//
free(adminp);
return 1;
}
/******************************************************************************/
/* C o n f i g */
/******************************************************************************/
#define TS_Xeq(x,m) (!strcmp(x,var)) GoNo = m(Config)
int XrdXrootdProtocol::Config(const char *ConfigFN)
{
XrdOucEnv myEnv;
XrdOucStream Config(&eDest, getenv("XRDINSTANCE"), &myEnv, "=====> ");
char *var;
int cfgFD, GoNo, NoGo = 0, ismine;
// Open and attach the config file
//
if ((cfgFD = open(ConfigFN, O_RDONLY, 0)) < 0)
return eDest.Emsg("Config", errno, "open config file", ConfigFN);
Config.Attach(cfgFD);
// Indicate what we are about to do in the capture stream
//
static const char *cvec[] = { "*** xroot protocol config:", 0 };
Config.Capture(cvec);
// Process items
//
while((var = Config.GetMyFirstWord()))
{ if ((ismine = !strncmp("xrootd.", var, 7)) && var[7]) var += 7;
else if ((ismine = !strcmp("all.export", var))) var += 4;
else if ((ismine = !strcmp("all.pidpath",var))) var += 4;
else if ((ismine = !strcmp("all.seclib", var))) var += 4;
if (ismine)
{ if TS_Xeq("async", xasync);
else if TS_Xeq("chksum", xcksum);
else if TS_Xeq("diglib", xdig);
else if TS_Xeq("export", xexp);
else if TS_Xeq("fslib", xfsl);
else if TS_Xeq("fsoverload", xfso);
else if TS_Xeq("gpflib", xgpf);
else if TS_Xeq("log", xlog);
else if TS_Xeq("monitor", xmon);
else if TS_Xeq("pidpath", xpidf);
else if TS_Xeq("prep", xprep);
else if TS_Xeq("redirect", xred);
else if TS_Xeq("seclib", xsecl);
else if TS_Xeq("tls", xtls);
else if TS_Xeq("trace", xtrace);
else if TS_Xeq("limit", xlimit);
else {eDest.Say("Config warning: ignoring unknown directive '",var,"'.");
Config.Echo();
continue;
}
if (GoNo) {Config.Echo(); NoGo = 1;}
}
}
// Add our config to our environment and return
//
return NoGo;
}
/******************************************************************************/
/* P r i v a t e F u n c t i o n s */
/******************************************************************************/
/******************************************************************************/
/* P i d F i l e */
/******************************************************************************/
void XrdXrootdProtocol::PidFile()
{
int rc, xfd;
char buff[32], pidFN[1200];
char *ppath=XrdOucUtils::genPath(pidPath,XrdOucUtils::InstName(-1));
const char *xop = 0;
if ((rc = XrdOucUtils::makePath(ppath,XrdOucUtils::pathMode)))
{xop = "create"; errno = rc;}
else {snprintf(pidFN, sizeof(pidFN), "%s/xrootd.pid", ppath);
if ((xfd = open(pidFN, O_WRONLY|O_CREAT|O_TRUNC,0644)) < 0)
xop = "open";
else {if (write(xfd,buff,snprintf(buff,sizeof(buff),"%d",
static_cast<int>(getpid()))) < 0) xop = "write";
close(xfd);
}
}
free(ppath);
if (xop) eDest.Emsg("Config", errno, xop, pidFN);
}
/******************************************************************************/
/* C o n f i g F S */
/******************************************************************************/
bool XrdXrootdProtocol::ConfigFS(XrdOucEnv &xEnv, const char *cfn)
{
const char *fsLoc;
int n;
// Get the filesystem to be used
//
if (FSLib[0])
{TRACE(DEBUG, "Loading base filesystem library " <<FSLib[0]);
osFS = XrdXrootdloadFileSystem(&eDest, 0, FSLib[0], cfn, &xEnv);
fsLoc = FSLib[0];
} else {
osFS = XrdSfsGetDefaultFileSystem(0, eDest.logger(), cfn, &xEnv);
fsLoc = "default";
}
// Make sure we have loaded something
//
if (!osFS)
{eDest.Emsg("Config", "Unable to load base file system using", fsLoc);
return false;
}
if (FSLib[0]) osFS->EnvInfo(&xEnv);
// If there is an old style wrapper, load it now.
//
if (FSLib[1] && !ConfigFS(FSLib[1], xEnv, cfn)) return false;
// Run through any other pushdowns
//
if ((n = FSLPath.size()))
for (int i = 0; i < n; i++)
{if (!ConfigFS(FSLPath[i].c_str(), xEnv, cfn)) return false;}
// Inform the statistics object which filesystem to use
//
SI->setFS(osFS);
// All done here
//
return true;
}
/******************************************************************************/
bool XrdXrootdProtocol::ConfigFS(const char *path, XrdOucEnv &xEnv,
const char *cfn)
{
// Try to load this wrapper library
//
TRACE(DEBUG, "Loading wrapper filesystem library " <<path);
osFS = XrdXrootdloadFileSystem(&eDest, osFS, path, cfn, &xEnv);
if (!osFS)
{eDest.Emsg("Config", "Unable to load file system wrapper from", path);
return false;
}
osFS->EnvInfo(&xEnv);
return true;
}
/******************************************************************************/
/* C o n f i g G S t r e a m */
/******************************************************************************/
void XrdXrootdProtocol::ConfigGStream(XrdOucEnv &myEnv)
{
struct GSTable {const char *pin; int Mode; char Type;} gsObj[] =
{{"ccm", XROOTD_MON_CCM, XROOTD_MON_GSCCM},
{"pfc", XROOTD_MON_PFC, XROOTD_MON_GSPFC}
};
int numgs = sizeof(gsObj)/sizeof(struct GSTable);
int flint = XrdXrootdMonitor::Flushing();
char vbuff[64];
// For each enabled monitoring provider, allocate a g-stream and put
// its address in our environment.
//
for (int i = 0; i < numgs; i++)
{if (XrdXrootdMonitor::ModeEnabled(gsObj[i].Mode))
{XrdXrootdGStream *gs = new XrdXrootdGSReal(gsObj[i].pin,
gsObj[i].Type,
gsObj[i].Mode, flint);
snprintf(vbuff, sizeof(vbuff), "%s.gStream*", gsObj[i].pin);
myEnv.PutPtr(vbuff, (void *)gs);
}
}
}
/******************************************************************************/
/* C o n f i g S e c u r i t y */
/******************************************************************************/
int XrdXrootdProtocol::ConfigSecurity(XrdOucEnv &xEnv, const char *cfn)
{
XrdSecGetProt_t secGetProt = 0;
char idBuff[256];
int n;
// Obtain our uid and username
//
myUID = geteuid();
if ((n = XrdOucUtils::UidName(myUID, idBuff, sizeof(idBuff))))
{myUName = strdup(idBuff);
myUNLen = n;
}
// Obtain our gid and groupname
//
myGID = getegid();
if ((n = XrdOucUtils::GidName(myGID, idBuff, sizeof(idBuff))))
{myGName = strdup(idBuff);
myGNLen = n;
}
// TLS support is independent of security per se. Record context, if any.
//
if (tlsCtx) xEnv.PutPtr("XrdTLSContext*", (void *)tlsCtx);
// Check if we need to load anything
//
if (!SecLib)
{eDest.Say("Config warning: 'xrootd.seclib' not specified;"
" strong authentication disabled!");
xEnv.PutPtr("XrdSecGetProtocol*", (void *)0);
xEnv.PutPtr("XrdSecProtector*" , (void *)0);
return 1;
}
// Blad some debugging info
//
TRACE(DEBUG, "Loading security library " <<SecLib);
// Load the security server
//
if (!(CIA = XrdSecLoadSecService(&eDest, cfn,
(strcmp(SecLib,"default") ? SecLib : 0),
&secGetProt, &DHS)))
{eDest.Emsg("Config", "Unable to load security system.");
return 0;
}
// Set environmental pointers
//
xEnv.PutPtr("XrdSecGetProtocol*", (void *)secGetProt);
xEnv.PutPtr("XrdSecProtector*" , (void *)DHS);
return 1;
}
/******************************************************************************/
/* x a s y n c */
/******************************************************************************/
/* Function: xasync
Purpose: To parse directive: async [limit <aiopl>] [maxsegs <msegs>]
[maxtot <mtot>] [segsize <segsz>]
[minsize <iosz>] [maxstalls <cnt>]
[force] [syncw] [off] [nosf]
<aiopl> maximum number of async ops per link. Default 8.
<msegs> maximum number of async ops per request. Default 8.
<mtot> maximum number of async ops per server. Default is 20%
of maximum connection times aiopl divided by two.
<segsz> The aio segment size. This is the maximum size that data
will be read or written. The defaults to 64K but is
adjusted for each request to minimize latency.
<iosz> the minimum number of bytes that must be read or written
to allow async processing to occur (default is maxbsz/2
typically 1M).
<cnt> Maximum number of client stalls before synchronous i/o is
used. Async mode is tried after <cnt> requests.
force Uses async i/o for all requests, even when not explicitly
requested (this is compatible with synchronous clients).
syncw Use synchronous i/o for write requests.
off Disables async i/o
nosf Disables use of sendfile to send data to the client.
Output: 0 upon success or 1 upon failure.
*/
int XrdXrootdProtocol::xasync(XrdOucStream &Config)
{
char *val;
int i, ppp;
int V_force=-1, V_syncw = -1, V_off = -1, V_mstall = -1, V_nosf = -1;
int V_limit=-1, V_msegs=-1, V_mtot=-1, V_minsz=-1, V_segsz=-1;
int V_minsf=-1;
long long llp;
struct asyncopts {const char *opname; int minv; int *oploc;
const char *opmsg;} asopts[] =
{
{"force", -1, &V_force, ""},
{"off", -1, &V_off, ""},
{"nosf", -1, &V_nosf, ""},
{"syncw", -1, &V_syncw, ""},
{"limit", 0, &V_limit, "async limit"},
{"segsize", 4096, &V_segsz, "async segsize"},
{"maxsegs", 0, &V_msegs, "async maxsegs"},
{"maxstalls", 0, &V_mstall,"async maxstalls"},
{"maxtot", 0, &V_mtot, "async maxtot"},
{"minsfsz", 1, &V_minsf, "async minsfsz"},
{"minsize", 4096, &V_minsz, "async minsize"}};
int numopts = sizeof(asopts)/sizeof(struct asyncopts);
if (!(val = Config.GetWord()))
{eDest.Emsg("Config", "async option not specified"); return 1;}
while (val)
{for (i = 0; i < numopts; i++)
if (!strcmp(val, asopts[i].opname))
{if (asopts[i].minv >= 0 && !(val = Config.GetWord()))
{eDest.Emsg("Config","async",(char *)asopts[i].opname,
"value not specified");
return 1;
}
if (asopts[i].minv > 0)
if (XrdOuca2x::a2sz(eDest,asopts[i].opmsg, val, &llp,
(long long)asopts[i].minv)) return 1;
else *asopts[i].oploc = (int)llp;
else if (asopts[i].minv == 0)
if (XrdOuca2x::a2i(eDest,asopts[i].opmsg,val,&ppp,1))
return 1;
else *asopts[i].oploc = ppp;
else *asopts[i].oploc = 1;
break;
}
if (i >= numopts)
eDest.Emsg("Config", "Warning, invalid async option", val);
val = Config.GetWord();
}
// Make sure max values are consistent
//
if (V_limit > 0 && V_mtot > 0 && V_limit > V_mtot)
{eDest.Emsg("Config", "async limit may not be greater than maxtot");
return 1;
}
// Calculate the actual segment size
//
if (V_segsz > 0)
{i = BPool->Recalc(V_segsz);
if (!i) {eDest.Emsg("Config", "async segsize is too large"); return 1;}
if (i != V_segsz)
{char buff[64];
sprintf(buff, "%d readjusted to %d", V_segsz, i);
eDest.Emsg("Config", "async segsize", buff);
V_segsz = i;
}
}
// Establish async options
//
if (V_limit > 0) as_maxperlnk = V_limit;
if (V_msegs > 0) as_maxperreq = V_msegs;
if (V_mtot > 0) as_maxpersrv = V_mtot;
if (V_minsz > 0) as_miniosz = V_minsz;
if (V_segsz > 0) as_segsize = V_segsz;
if (V_mstall> 0) as_maxstalls = V_mstall;
if (V_force > 0) as_force = 1;
if (V_off > 0) as_noaio = 1;
if (V_syncw > 0) as_syncw = 1;
if (V_nosf > 0) as_nosf = 1;
if (V_minsf > 0) as_minsfsz = V_minsf;
return 0;
}
/******************************************************************************/
/* x c k s u m */
/******************************************************************************/
/* Function: xcksum
Purpose: To parse the directive: chksum [chkcgi] [max <n>] <type> [<path>]
max maximum number of simultaneous jobs
chkcgi Always check for checksum type in cgo info.
<type> algorithm of checksum (e.g., md5). If more than one
checksum is supported then they should be listed with
each separated by a space.
<path> the path of the program performing the checksum
If no path is given, the checksum is local.
Output: 0 upon success or !0 upon failure.
*/
int XrdXrootdProtocol::xcksum(XrdOucStream &Config)
{
static XrdOucProg *theProg = 0;
int (*Proc)(XrdOucStream *, char **, int) = 0;
XrdOucTList *tP, *algFirst = 0, *algLast = 0;
char *palg, prog[2048];
int jmax = 4, anum[2] = {0,0};
// Get the algorithm name and the program implementing it
//
JobCKCGI = 0;
while ((palg = Config.GetWord()) && *palg != '/')
{if (!strcmp(palg,"chkcgi")) {JobCKCGI = 1; continue;}
if (strcmp(palg, "max"))
{XrdOucUtils::toLower(palg);
XrdOucTList *xalg = new XrdOucTList(palg, anum); anum[0]++;
if (algLast) algLast->next = xalg;
else algFirst = xalg;
algLast = xalg;
continue;
}
if (!(palg = Config.GetWord()))
{eDest.Emsg("Config", "chksum max not specified"); return 1;}
if (XrdOuca2x::a2i(eDest, "chksum max", palg, &jmax, 0)) return 1;
}
// Verify we have an algoritm
//
if (!algFirst)
{eDest.Emsg("Config", "chksum algorithm not specified"); return 1;}
if (JobCKT) free(JobCKT);
JobCKT = strdup(algFirst->text);
// Handle alternate checksums
//
while((tP = JobCKTLST)) {JobCKTLST = tP->next; delete tP;}
JobCKTLST = algFirst;
if (algFirst->next) JobCKCGI = 2;
// Handle program if we have one
//
if (palg)
{int n = strlen(palg);
if (n+2 >= (int)sizeof(prog))
{eDest.Emsg("Config", "cksum program too long"); return 1;}
strcpy(prog, palg); palg = prog+n; *palg++ = ' '; n = sizeof(prog)-n-1;
if (!Config.GetRest(palg, n))
{eDest.Emsg("Config", "cksum parameters too long"); return 1;}
} else *prog = 0;
// Check if we have a program. If not, then this will be a local checksum and
// the algorithm will be verified after we load the filesystem.
//
if (*prog) JobLCL = 0;
else { JobLCL = 1; Proc = &CheckSum; strcpy(prog, "chksum");}
// Set up the program and job
//
if (!theProg) theProg = new XrdOucProg(0);
if (theProg->Setup(prog, &eDest, Proc)) return 1;
if (JobCKS) delete JobCKS;
if (jmax) JobCKS = new XrdXrootdJob(Sched, theProg, "chksum", jmax);
else JobCKS = 0;
return 0;
}
/******************************************************************************/
/* x d i g */
/******************************************************************************/
/* Function: xdig
Purpose: To parse the directive: diglib * <parms>
* use builtin digfs library (only one supported now).
parms parameters for digfs.
Output: 0 upon success or !0 upon failure.
*/
int XrdXrootdProtocol::xdig(XrdOucStream &Config)
{
char parms[4096], *val;
// Get the path
//
if (!(val = Config.GetWord()))
{eDest.Emsg("Config", "diglib not specified"); return 1;}
// Make sure it refers to an internal one
//
if (strcmp(val, "*"))
{eDest.Emsg("Config", "builtin diglib not specified"); return 1;}
// Grab the parameters
//
if (!Config.GetRest(parms, sizeof(parms)))
{eDest.Emsg("Config", "diglib parameters too long"); return 1;}
if (digParm) free(digParm);
digParm = strdup(parms);
// All done
//
return 0;
}
/******************************************************************************/
/* x e x p */
/******************************************************************************/
/* Function: xexp
Purpose: To parse the directive: export <path> [lock|nolock] [mwfiles]
<path> the path to be exported.
Output: 0 upon success or !0 upon failure.
*/