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XrdConfig.cc
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XrdConfig.cc
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/*******************************************************************************/
/* */
/* X r d C o n f i g . c c */
/* */
/* (c) 2011 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. */
/******************************************************************************/
/*
The default port number comes from:
1) The command line option,
2) The config file,
3) The /etc/services file for service corresponding to the program name.
*/
#include <unistd.h>
#include <ctype.h>
#include <fcntl.h>
#include <pwd.h>
#include <string>
#include <string.h>
#include <stdio.h>
#include <sys/param.h>
#include <sys/resource.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "XrdVersion.hh"
#include "Xrd/XrdBuffXL.hh"
#include "Xrd/XrdConfig.hh"
#include "Xrd/XrdInfo.hh"
#include "Xrd/XrdLink.hh"
#include "Xrd/XrdLinkCtl.hh"
#include "Xrd/XrdPoll.hh"
#include "Xrd/XrdStats.hh"
#include "Xrd/XrdTrace.hh"
#include "XrdNet/XrdNetAddr.hh"
#include "XrdNet/XrdNetIF.hh"
#include "XrdNet/XrdNetSecurity.hh"
#include "XrdNet/XrdNetUtils.hh"
#include "XrdOuc/XrdOuca2x.hh"
#include "XrdOuc/XrdOucEnv.hh"
#include "XrdOuc/XrdOucLogging.hh"
#include "XrdOuc/XrdOucSiteName.hh"
#include "XrdOuc/XrdOucStream.hh"
#include "XrdOuc/XrdOucUtils.hh"
#include "XrdSys/XrdSysFD.hh"
#include "XrdSys/XrdSysHeaders.hh"
#include "XrdSys/XrdSysTimer.hh"
#include "XrdSys/XrdSysUtils.hh"
#include "XrdTls/XrdTlsContext.hh"
#ifdef __linux__
#include <netinet/tcp.h>
#endif
#ifdef __APPLE__
#include <AvailabilityMacros.h>
#endif
/******************************************************************************/
/* G l o b a l O b j e c t s */
/******************************************************************************/
namespace XrdGlobal
{
extern XrdSysLogger Logger;
extern XrdSysError Log;
extern XrdOucTrace XrdTrace;
extern XrdScheduler Sched;
extern XrdBuffManager BuffPool;
extern XrdTlsContext *tlsCtx;
extern XrdInet *XrdNetTCP;
extern XrdBuffXL xlBuff;
extern int devNull;
};
using namespace XrdGlobal;
namespace XrdNetSocketCFG
{
extern int ka_Idle;
extern int ka_Itvl;
extern int ka_Icnt;
};
/******************************************************************************/
/* F i l e L o c a l O b j e c t s */
/******************************************************************************/
namespace
{
XrdOucEnv theEnv;
};
/******************************************************************************/
/* S t a t i c M e m b e r s */
/******************************************************************************/
const char *XrdConfig::TraceID = "Config";
/******************************************************************************/
/* d e f i n e s */
/******************************************************************************/
#define TS_Xeq(x,m) if (!strcmp(x,var)) return m(eDest, Config);
#ifndef S_IAMB
#define S_IAMB 0x1FF
#endif
/******************************************************************************/
/* L o c a l C l a s s e s */
/******************************************************************************/
/******************************************************************************/
/* X r d C o n f i g P r o t */
/******************************************************************************/
class XrdConfigProt
{
public:
XrdConfigProt *Next;
char *proname;
char *libpath;
char *parms;
int port;
bool dotls;
XrdConfigProt(char *pn, char *ln, char *pp, int np=-1,
bool to=false)
: Next(0), proname(pn), libpath(ln), parms(pp), port(np),
dotls(to) {}
~XrdConfigProt()
{free(proname);
if (libpath) free(libpath);
if (parms) free(parms);
}
};
/******************************************************************************/
/* C o n s t r u c t o r */
/******************************************************************************/
XrdConfig::XrdConfig()
{
// Preset all variables with common defaults
//
PortTCP = -1;
PortUDP = -1;
PortTLS = 0;
ConfigFN = 0;
myInsName= 0;
mySitName= 0;
AdminPath= strdup("/tmp");
HomePath = 0;
tlsCert = 0;
tlsKey = 0;
AdminMode= 0700;
HomeMode = 0700;
Police = 0;
Net_Opts = XRDNET_KEEPALIVE;
TLS_Blen = 0; // Accept OS default (leave Linux autotune in effect)
TLS_Opts = XRDNET_KEEPALIVE | XRDNET_USETLS;
repDest[0] = 0;
repDest[1] = 0;
repInt = 600;
repOpts = 0;
ppNet = 0;
tlsHSTO =10;
NetTCPlep = -1;
NetADM = 0;
coreV = 1;
tlsSSL = false;
memset(NetTCP, 0, sizeof(NetTCP));
Firstcp = Lastcp = 0;
ProtInfo.eDest = &Log; // Stable -> Error Message/Logging Handler
ProtInfo.NetTCP = 0; // Stable -> Network Object
ProtInfo.BPool = &BuffPool; // Stable -> Buffer Pool Manager
ProtInfo.Sched = &Sched; // Stable -> System Scheduler
ProtInfo.ConfigFN= 0; // We will fill this in later
ProtInfo.Stats = 0; // We will fill this in later
ProtInfo.Trace = &XrdTrace; // Stable -> Trace Information
ProtInfo.AdmPath = AdminPath; // Stable -> The admin path
ProtInfo.AdmMode = AdminMode; // Stable -> The admin path mode
ProtInfo.theEnv = &theEnv; // Additional information
ProtInfo.Format = XrdFORMATB;
memset(ProtInfo.rsvd3, 0, sizeof(ProtInfo.rsvd3));
ProtInfo.WSize = 0;
ProtInfo.ConnMax = -1; // Max connections (fd limit)
ProtInfo.readWait = 3*1000; // Wait time for data before we reschedule
ProtInfo.idleWait = 0; // Seconds connection may remain idle (0=off)
ProtInfo.hailWait =30*1000; // Wait time for data before we drop connection
ProtInfo.DebugON = 0; // 1 if started with -d
ProtInfo.argc = 0;
ProtInfo.argv = 0;
ProtInfo.tlsPort = 0;
ProtInfo.tlsCtx = 0;
XrdNetAddr::SetCache(3*60*60); // Cache address resolutions for 3 hours
}
/******************************************************************************/
/* C o n f i g u r e */
/******************************************************************************/
int XrdConfig::Configure(int argc, char **argv)
{
/*
Function: Establish configuration at start up time.
Input: None.
Output: 0 upon success or !0 otherwise.
*/
const char *xrdInst="XRDINSTANCE=";
int retc, NoGo = 0, clPort = -1, optbg = 0;
const char *temp;
char c, buff[512], *dfltProt, *libProt = 0;
uid_t myUid = 0;
gid_t myGid = 0;
extern char *optarg;
extern int optind, opterr;
struct XrdOucLogging::configLogInfo LogInfo;
int pipeFD[2] = {-1, -1};
const char *pidFN = 0;
static const int myMaxc = 80;
char **urArgv, *myArgv[myMaxc], argBuff[myMaxc*3+8];
char *argbP = argBuff, *argbE = argbP+sizeof(argBuff)-4;
char *ifList = 0;
int myArgc = 1, urArgc = argc, i;
bool noV6, ipV4 = false, ipV6 = false;
// Obtain the protocol name we will be using
//
retc = strlen(argv[0]);
while(retc--) if (argv[0][retc] == '/') break;
myProg = dfltProt = &argv[0][retc+1];
// Setup the initial required protocol. The program name matches the protocol
// name but may be arbitrarily suffixed. We need to ignore this suffix. So we
// look for it here and it it exists we duplicate argv[0] (yes, loosing some
// bytes - sorry valgrind) without the suffix.
//
{char *p = dfltProt;
while(*p && (*p == '.' || *p == '-')) p++;
if (*p)
{char *dot = index(p, '.'), *dash = index(p, '-'), sepc;
if (dot && (dot < dash || !dash)) p = dot;
else if (dash) p = dash;
else p = 0;
if (p) {sepc = *p; *p = '\0'; dfltProt = strdup(dfltProt); *p = sepc;}
}
}
myArgv[0] = argv[0];
// Prescan the argument list to see if there is a passthrough option. In any
// case, we will set the ephemeral argv/arg in the environment.
//
i = 1;
while(i < argc)
{if (*(argv[i]) == '-' && *(argv[i]+1) == '+')
{int n = strlen(argv[i]+2), j = i+1, k = 1;
if (urArgc == argc) urArgc = i;
if (n) memcpy(buff, argv[i]+2, (n > 256 ? 256 : n));
strcpy(&(buff[n]), ".argv**");
while(j < argc && (*(argv[j]) != '-' || *(argv[j]+1) != '+')) j++;
urArgv = new char*[j-i+1];
urArgv[0] = argv[0];
i++;
while(i < j) urArgv[k++] = argv[i++];
urArgv[k] = 0;
theEnv.PutPtr(buff, urArgv);
strcpy(&(buff[n]), ".argc");
theEnv.PutInt(buff, static_cast<long>(k));
} else i++;
}
theEnv.PutPtr("argv[0]", argv[0]);
// Process the options. Note that we cannot passthrough long options or
// options that take arguments because getopt permutes the arguments.
//
opterr = 0;
if (argc > 1 && '-' == *argv[1])
while ((c = getopt(urArgc,argv,":bc:dhHI:k:l:L:n:p:P:R:s:S:vz"))
&& ((unsigned char)c != 0xff))
{ switch(c)
{
case 'b': optbg = 1;
break;
case 'c': if (ConfigFN) free(ConfigFN);
ConfigFN = strdup(optarg);
break;
case 'd': XrdTrace.What |= TRACE_ALL;
ProtInfo.DebugON = 1;
XrdOucEnv::Export("XRDDEBUG", "1");
break;
case 'h': Usage(0);
break;
case 'H': Usage(-1);
break;
case 'I': if (!strcmp("v4", optarg)) {ipV4 = true; ipV6 = false;}
else if (!strcmp("v6", optarg)) {ipV4 = false; ipV6 = true;}
else {Log.Emsg("Config", "Invalid -I argument -",optarg);
Usage(1);
}
break;
case 'k': if (!(LogInfo.keepV = Log.logger()->ParseKeep(optarg)))
{Log.Emsg("Config","Invalid -k argument -",optarg);
Usage(1);
}
break;
case 'l': LogInfo.logArg = optarg;
break;
case 'L': if (!*optarg)
{Log.Emsg("Config", "Protocol library path not specified.");
Usage(1);
}
if (libProt) free(libProt);
libProt = strdup(optarg);
break;
case 'n': myInsName = (!strcmp(optarg,"anon")||!strcmp(optarg,"default")
? 0 : optarg);
break;
case 'p': if ((clPort = yport(&Log, "tcp", optarg)) < 0) Usage(1);
break;
case 'P': dfltProt = optarg;
break;
case 'R': if (!(getUG(optarg, myUid, myGid))) Usage(1);
break;
case 's': pidFN = optarg;
break;
case 'S': mySitName = optarg;
break;
case ':': buff[0] = '-'; buff[1] = optopt; buff[2] = 0;
Log.Emsg("Config", buff, "parameter not specified.");
Usage(1);
break;
case 'v': cerr <<XrdVSTRING <<endl;
_exit(0);
break;
case 'z': LogInfo.hiRes = true;
break;
default: if (optopt == '-' && *(argv[optind]+1) == '-')
{Log.Emsg("Config", "Long options are not supported.");
Usage(1);
}
if (myArgc >= myMaxc || argbP >= argbE)
{Log.Emsg("Config", "Too many command line arguments.");
Usage(1);
}
myArgv[myArgc++] = argbP;
*argbP++ = '-'; *argbP++ = optopt; *argbP++ = 0;
break;
}
}
// The first thing we must do is to set the correct networking mode
//
noV6 = XrdNetAddr::IPV4Set();
if (ipV4) XrdNetAddr::SetIPV4();
else if (ipV6){if (noV6) Log.Say("Config warning: ipV6 appears to be broken;"
" forced ipV6 mode not advised!");
XrdNetAddr::SetIPV6();
}
else if (noV6) Log.Say("Config warning: ipV6 is misconfigured or "
"unavailable; reverting to ipV4.");
// Set the site name if we have one
//
if (mySitName) mySitName = XrdOucSiteName::Set(mySitName, 63);
// Drop into non-privileged state if so requested
//
if (myGid && setegid(myGid))
{Log.Emsg("Config", errno, "set effective gid"); exit(17);}
if (myUid && seteuid(myUid))
{Log.Emsg("Config", errno, "set effective uid"); exit(17);}
// Pass over any parameters
//
if (urArgc-optind+2 >= myMaxc)
{Log.Emsg("Config", "Too many command line arguments.");
Usage(1);
}
for ( ; optind < urArgc; optind++) myArgv[myArgc++] = argv[optind];
// Record the actual arguments that we will pass on
//
myArgv[myArgc] = 0;
ProtInfo.argc = myArgc;
ProtInfo.argv = myArgv;
// Resolve background/foreground issues
//
if (optbg)
{
#ifdef WIN32
XrdOucUtils::Undercover(&Log, !LogInfo.logArg);
#else
if (pipe( pipeFD ) == -1)
{Log.Emsg("Config", errno, "create a pipe"); exit(17);}
XrdOucUtils::Undercover(Log, !LogInfo.logArg, pipeFD);
#endif
}
// Get the full host name. We must define myIPAddr here because we may need to
// run in v4 mode and that doesn't get set until after the options are scanned.
//
static XrdNetAddr *myIPAddr = new XrdNetAddr((int)0);
if (!(myName = myIPAddr->Name(0, &temp))) myName = "";
// Get our IP address and FQN
//
ProtInfo.myName = myName;
ProtInfo.myAddr = myIPAddr->SockAddr();
ProtInfo.myInst = XrdOucUtils::InstName(myInsName);
ProtInfo.myProg = myProg;
// Set the Environmental variable to hold the instance name
// XRDINSTANCE=<pgm> <instance name>@<host name>
// XrdOucEnv::Export("XRDINSTANCE")
//
sprintf(buff,"%s%s %s@%s", xrdInst, myProg, ProtInfo.myInst, myName);
myInstance = strdup(buff);
putenv(myInstance); // XrdOucEnv::Export("XRDINSTANCE",...)
myInstance += strlen(xrdInst);
XrdOucEnv::Export("XRDHOST", myName);
XrdOucEnv::Export("XRDNAME", ProtInfo.myInst);
XrdOucEnv::Export("XRDPROG", myProg);
// Bind the log file if we have one
//
if (LogInfo.logArg)
{LogInfo.xrdEnv = &theEnv;
LogInfo.iName = myInsName;
LogInfo.cfgFn = ConfigFN;
if (!XrdOucLogging::configLog(Log, LogInfo)) _exit(16);
Log.logger()->AddMsg(XrdBANNER);
}
// We now test for host name. In theory, we should always get some kind of name.
// We can't really continue without some kind of name at this point. Note that
// vriable temp should still be valid from the previous NetAddr call.
//
if (!(*myName))
{Log.Emsg("Config", "Unable to determine host name; ",
(temp ? temp : "reason unknown"),
"; execution terminated.");
_exit(16);
}
// Tell NetIF what logger to use as it's been properly setup by now.
//
XrdNetIF::SetMsgs(&Log);
// Put out the herald
//
strcpy(buff, "Starting on ");
retc = strlen(buff);
XrdSysUtils::FmtUname(buff+retc, sizeof(buff)-retc);
Log.Say(0, buff);
Log.Say(XrdBANNER);
// Verify that we have a real name. We've had problems with people setting up
// bad /etc/hosts files that can cause connection failures if "allow" is used.
// Otherwise, determine our domain name.
//
if (!myIPAddr->isRegistered())
{Log.Emsg("Config",myName,"does not appear to be registered in the DNS.");
Log.Emsg("Config","Verify that the '/etc/hosts' file is correct and "
"this machine is registered in DNS.");
Log.Emsg("Config", "Execution continues but connection failures may occur.");
myDomain = 0;
} else if (!(myDomain = index(myName, '.')))
Log.Say("Config warning: this hostname, ", myName,
", is registered without a domain qualification.");
// Setup the initial required protocol.
//
Firstcp = Lastcp = new XrdConfigProt(strdup(dfltProt), libProt, 0);
// Let start it up!
//
Log.Say("++++++ ", myInstance, " initialization started.");
// Allocate /dev/null as we need it and can't live without it
//
devNull = XrdSysFD_Open("/dev/null", O_RDONLY);
if (devNull < 0)
{Log.Emsg("Config", errno, "open '/dev/null' which is required!");
NoGo = 1;
}
// Process the configuration file, if one is present
//
if (ConfigFN && *ConfigFN)
{Log.Say("Config using configuration file ", ConfigFN);
ProtInfo.ConfigFN = ConfigFN;
setCFG();
NoGo = ConfigProc();
}
if (clPort >= 0) PortTCP = clPort;
if (ProtInfo.DebugON)
{XrdTrace.What = TRACE_ALL;
XrdSysThread::setDebug(&Log);
}
// If tls enabled, set it up
//
if (!tlsCert) ProtInfo.tlsCtx= 0;
else {Log.Say("++++++ ", myInstance, " TLS initialization started.");
if (SetupTLS())
{Log.Say("++++++ ", myInstance, " TLS initialization ended.");
ProtInfo.tlsCtx = XrdGlobal::tlsCtx;
} else {
NoGo = 1;
Log.Say("++++++ ", myInstance, " TLS initialization failed.");
}
}
// If there is TLS port verify that it can be used
//
if (PortTLS > 0 && !XrdGlobal::tlsCtx)
{Log.Say("Config TLS port specification ignored; TLS not configured!");
PortTLS = -1;
} else {
ProtInfo.tlsCtx = XrdGlobal::tlsCtx;
ProtInfo.tlsPort = PortTLS;
}
// Put largest buffer size in the env
//
theEnv.PutInt("MaxBuffSize", XrdGlobal::xlBuff.MaxSize());
// Export the network interface list at this point
//
if (ppNet && XrdNetIF::GetIF(ifList, 0, true))
XrdOucEnv::Export("XRDIFADDRS",ifList);
// Configure network routing
//
if (!XrdInet::netIF.SetIF(myIPAddr, ifList))
{Log.Emsg("Config", "Unable to determine interface addresses!");
NoGo = 1;
}
// Now initialize the protocols and other stuff
//
if (!NoGo) NoGo = Setup(dfltProt, libProt);
// If we hae a net name change the working directory
//
if ((myInsName || HomePath)
&& !XrdOucUtils::makeHome(Log, myInsName, HomePath, HomeMode)) NoGo = 1;
// if we call this it means that the daemon has forked and we are
// in the child process
#ifndef WIN32
if (optbg)
{
if (pidFN && !XrdOucUtils::PidFile(Log, pidFN ) )
NoGo = 1;
int status = NoGo ? 1 : 0;
if(write( pipeFD[1], &status, sizeof( status ) )) {};
close( pipeFD[1]);
}
#endif
// Establish a pid/manifest file for auto-collection
//
if (!NoGo) Manifest(pidFN);
// All done, close the stream and return the return code.
//
temp = (NoGo ? " initialization failed." : " initialization completed.");
sprintf(buff, "%s:%d", myInstance, PortTCP);
Log.Say("------ ", buff, temp);
if (LogInfo.logArg)
{strcat(buff, " running ");
retc = strlen(buff);
XrdSysUtils::FmtUname(buff+retc, sizeof(buff)-retc);
Log.logger()->AddMsg(buff);
}
return NoGo;
}
/******************************************************************************/
/* C o n f i g X e q */
/******************************************************************************/
int XrdConfig::ConfigXeq(char *var, XrdOucStream &Config, XrdSysError *eDest)
{
int dynamic;
// Determine whether is is dynamic or not
//
if (eDest) dynamic = 1;
else {dynamic = 0; eDest = &Log;}
// Process common items
//
TS_Xeq("buffers", xbuf);
TS_Xeq("network", xnet);
TS_Xeq("sched", xsched);
TS_Xeq("trace", xtrace);
// Process items that can only be processed once
//
if (!dynamic)
{
TS_Xeq("adminpath", xapath);
TS_Xeq("allow", xallow);
TS_Xeq("homepath", xhpath);
TS_Xeq("port", xport);
TS_Xeq("protocol", xprot);
TS_Xeq("report", xrep);
TS_Xeq("sitename", xsit);
TS_Xeq("timeout", xtmo);
TS_Xeq("tls", xtls);
}
// No match found, complain.
//
eDest->Say("Config warning: ignoring unknown xrd directive '",var,"'.");
Config.Echo();
return 0;
}
/******************************************************************************/
/* P r i v a t e F u n c t i o n s */
/******************************************************************************/
/******************************************************************************/
/* A S o c k e t */
/******************************************************************************/
int XrdConfig::ASocket(const char *path, const char *fname, mode_t mode)
{
char xpath[MAXPATHLEN+8], sokpath[108];
int plen = strlen(path), flen = strlen(fname);
int rc;
// Make sure we can fit everything in our buffer
//
if ((plen + flen + 3) > (int)sizeof(sokpath))
{Log.Emsg("Config", "admin path", path, "too long");
return 1;
}
// Create the directory path
//
strcpy(xpath, path);
if ((rc = XrdOucUtils::makePath(xpath, mode)))
{Log.Emsg("Config", rc, "create admin path", xpath);
return 1;
}
// *!*!* At this point we do not yet support the admin path for xrd.
// sp we comment out all of the following code.
/*
// Construct the actual socket name
//
if (sokpath[plen-1] != '/') sokpath[plen++] = '/';
strcpy(&sokpath[plen], fname);
// Create an admin network
//
NetADM = new XrdInet(&Log);
if (myDomain) NetADM->setDomain(myDomain);
// Bind the netwok to the named socket
//
if (!NetADM->Bind(sokpath)) return 1;
// Set the mode and return
//
chmod(sokpath, mode); // This may fail on some platforms
*/
return 0;
}
/******************************************************************************/
/* C o n f i g P r o c */
/******************************************************************************/
int XrdConfig::ConfigProc()
{
char *var;
int cfgFD, retc, NoGo = 0;
XrdOucEnv myEnv;
XrdOucStream Config(&Log, myInstance, &myEnv, "=====> ");
// Try to open the configuration file.
//
if ( (cfgFD = open(ConfigFN, O_RDONLY, 0)) < 0)
{Log.Emsg("Config", errno, "open config file", ConfigFN);
return 1;
}
Config.Attach(cfgFD);
// Now start reading records until eof.
//
while((var = Config.GetMyFirstWord()))
if (!strncmp(var, "xrd.", 4)
|| !strcmp (var, "all.adminpath")
|| !strcmp (var, "all.sitename" ))
if (ConfigXeq(var+4, Config)) {Config.Echo(); NoGo = 1;}
// Now check if any errors occured during file i/o
//
if ((retc = Config.LastError()))
NoGo = Log.Emsg("Config", retc, "read config file", ConfigFN);
Config.Close();
// Return final return code
//
return NoGo;
}
/******************************************************************************/
/* g e t U G */
/******************************************************************************/
int XrdConfig::getUG(char *parm, uid_t &newUid, gid_t &newGid)
{
struct passwd *pp;
// Get the userid entry
//
if (!(*parm))
{Log.Emsg("Config", "-R user not specified."); return 0;}
if (isdigit(*parm))
{if (!(newUid = atol(parm)))
{Log.Emsg("Config", "-R", parm, "is invalid"); return 0;}
pp = getpwuid(newUid);
}
else pp = getpwnam(parm);
// Make sure it is valid and acceptable
//
if (!pp)
{Log.Emsg("Config", errno, "retrieve -R user password entry");
return 0;
}
if (!(newUid = pp->pw_uid))
{Log.Emsg("Config", "-R", parm, "is still unacceptably a superuser!");
return 0;
}
newGid = pp->pw_gid;
return 1;
}
/******************************************************************************/
/* M a n i f e s t */
/******************************************************************************/
void XrdConfig::Manifest(const char *pidfn)
{
const char *Slash;
char envBuff[8192], pwdBuff[1024], manBuff[1024], *pidP, *sP, *xP;
int envFD, envLen;
// Get the current working directory
//
if (!getcwd(pwdBuff, sizeof(pwdBuff)))
{Log.Emsg("Config", "Unable to get current working directory!");
return;
}
// Prepare for symlinks
//
strcpy(envBuff, ProtInfo.AdmPath);
envLen = strlen(envBuff);
if (envBuff[envLen-1] != '/') {envBuff[envLen] = '/'; envLen++;}
strcpy(envBuff+envLen, ".xrd/");
xP = envBuff+envLen+5;
// Create a symlink to the configuration file
//
if ((sP = getenv("XRDCONFIGFN")))
{sprintf(xP, "=/conf/%s.cf", myProg);
XrdOucUtils::ReLink(envBuff, sP);
}
// Create a symlink to where core files will be found
//
sprintf(xP, "=/core/%s", myProg);
XrdOucUtils::ReLink(envBuff, pwdBuff);
// Create a symlink to where log files will be found
//
if ((sP = getenv("XRDLOGDIR")))
{sprintf(xP, "=/logs/%s", myProg);
XrdOucUtils::ReLink(envBuff, sP);
}
// Create a symlink to out proc information (Linux only)
//
#ifdef __linux__
sprintf(xP, "=/proc/%s", myProg);
sprintf(manBuff, "/proc/%d", getpid());
XrdOucUtils::ReLink(envBuff, manBuff);
#endif
// Create environment string
//
envLen = snprintf(envBuff, sizeof(envBuff), "pid=%d&host=%s&inst=%s&ver=%s"
"&cfgfn=%s&cwd=%s&apath=%s&logfn=%s\n",
static_cast<int>(getpid()), ProtInfo.myName,
ProtInfo.myInst, XrdVSTRING,
(getenv("XRDCONFIGFN") ? getenv("XRDCONFIGFN") : ""),
pwdBuff, ProtInfo.AdmPath, Log.logger()->xlogFN());
// Find out where we should write this
//
if (pidfn && (Slash = rindex(pidfn, '/')))
{strncpy(manBuff, pidfn, Slash-pidfn); pidP = manBuff+(Slash-pidfn);}
else {strcpy(manBuff, "/tmp"); pidP = manBuff+4;}
// Construct the pid file name for ourselves
//
snprintf(pidP, sizeof(manBuff)-(pidP-manBuff), "/%s.%s.env",
ProtInfo.myProg, ProtInfo.myInst);
// Open the file
//
if ((envFD = open(manBuff, O_WRONLY|O_CREAT|O_TRUNC, 0664)) < 0)
{Log.Emsg("Config", errno, "create envfile", manBuff);
return;
}
// Write out environmental information
//
if (write(envFD, envBuff, envLen) < 0)
Log.Emsg("Config", errno, "write to envfile", manBuff);
// All done
//
close(envFD);
}
/******************************************************************************/
/* s e t C F G */
/******************************************************************************/
void XrdConfig::setCFG()
{
char cwdBuff[1024], *cfnP = cwdBuff;
int n;
// If the config file is absolute, export it as is
//
if (*ConfigFN == '/')
{XrdOucEnv::Export("XRDCONFIGFN", ConfigFN);
return;
}
// Prefix current working directory to the config file
//
if (!getcwd(cwdBuff, sizeof(cwdBuff)-strlen(ConfigFN)-2)) cfnP = ConfigFN;
else {n = strlen(cwdBuff);
if (cwdBuff[n-1] != '/') cwdBuff[n++] = '/';
strcpy(cwdBuff+n, ConfigFN);
}
// Export result
//
XrdOucEnv::Export("XRDCONFIGFN", cfnP);
}
/******************************************************************************/
/* s e t F D L */
/******************************************************************************/
int XrdConfig::setFDL()
{
static const int maxFD = 65535; // was 1048576 see XrdNetAddrInfo::sockNum
struct rlimit rlim;
char buff[100];
// Get the resource limit
//
if (getrlimit(RLIMIT_NOFILE, &rlim) < 0)
return Log.Emsg("Config", errno, "get FD limit");
// Set the limit to the maximum allowed
//
if (rlim.rlim_max == RLIM_INFINITY) rlim.rlim_cur = maxFD;
else rlim.rlim_cur = rlim.rlim_max;
#if (defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_5))
if (rlim.rlim_cur > OPEN_MAX) rlim.rlim_max = rlim.rlim_cur = OPEN_MAX;
#endif
if (setrlimit(RLIMIT_NOFILE, &rlim) < 0)
return Log.Emsg("Config", errno,"set FD limit");
// Obtain the actual limit now
//
if (getrlimit(RLIMIT_NOFILE, &rlim) < 0)
return Log.Emsg("Config", errno, "get FD limit");
// Establish operating limit
//
ProtInfo.ConnMax = rlim.rlim_cur;
sprintf(buff, "%d", ProtInfo.ConnMax);
Log.Say("Config maximum number of connections restricted to ", buff);
// Set core limit and but Solaris
//
#if !defined( __solaris__ ) && defined(RLIMIT_CORE)
if (coreV >= 0)
{if (getrlimit(RLIMIT_CORE, &rlim) < 0)
Log.Emsg("Config", errno, "get core limit");
else {rlim.rlim_cur = (coreV ? rlim.rlim_max : 0);
if (setrlimit(RLIMIT_CORE, &rlim) < 0)
Log.Emsg("Config", errno,"set core limit");
}
}
#endif
// The scheduler will have already set the thread limit. We just report it
//
#if defined(__linux__) && defined(RLIMIT_NPROC)
// Obtain the actual limit now (Scheduler construction sets this to rlim_max)
//
if (getrlimit(RLIMIT_NPROC, &rlim) < 0)
return Log.Emsg("Config", errno, "get thread limit");
// Establish operating limit
//
int nthr = static_cast<int>(rlim.rlim_cur);
if (nthr < 8192 || ProtInfo.DebugON)
{sprintf(buff, "%d", static_cast<int>(rlim.rlim_cur));
Log.Say("Config maximum number of threads restricted to ", buff);
}
#endif
return 0;
}
/******************************************************************************/
/* S e t u p */
/******************************************************************************/
int XrdConfig::Setup(char *dfltp, char *libProt)
{
XrdConfigProt *cp;
int i, xport, wsz, arbNet, the_Opts, the_Blen;
// Establish the FD limit
//
if (setFDL()) return 1;
// Special handling for Linux sendfile()
//
#if defined(__linux__) && defined(TCP_CORK)
{ int sokFD, setON = 1;
if ((sokFD = socket(PF_INET, SOCK_STREAM, 0)) >= 0)
{setsockopt(sokFD, XrdNetUtils::ProtoID("tcp"), TCP_NODELAY,
&setON, sizeof(setON));
if (setsockopt(sokFD, SOL_TCP, TCP_CORK, &setON, sizeof(setON)) < 0)
XrdLink::sfOK = 0;
close(sokFD);
}
}
#endif