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XrdOucExport.cc
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XrdOucExport.cc
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/******************************************************************************/
/* */
/* X r d O u c E x p o r t . c c */
/* */
/* (c) 2007 by the Board of Trustees of the Leland Stanford, Jr., University */
/* All Rights Reserved */
/* 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 "XrdOuc/XrdOucExport.hh"
#include "XrdOuc/XrdOucPList.hh"
#include "XrdSys/XrdSysPlatform.hh"
/******************************************************************************/
/* P a r s e D e f s */
/******************************************************************************/
/* Function: ParseDefs
Purpose: Parse: defaults [[no]cache] [[no]check] [[no]dread]
[[no]filter] [forcero]
[inplace] [local] [global] [globalro]
[[no]mig] [[not]migratable] [[no]mkeep]
[[no]mlock] [[no]mmap] [outplace] [readonly]
[[no]stage] [stage+] [[no]rcreate]
[[not]writable] [[no]xattrs]
Notes: See the oss configuration manual for the meaning of each option.
Output: Returns updated flags passed as input
*/
unsigned long long XrdOucExport::ParseDefs(XrdOucStream &Config,
XrdSysError &Eroute,
unsigned long long Flags)
{
static struct rpathopts
{const char *opname;
unsigned long long oprem;
unsigned long long opadd;
unsigned long long opset;} rpopts[] =
{
{"r/o", 0, XRDEXP_READONLY,XRDEXP_ROW_X},
{"readonly", 0, XRDEXP_READONLY,XRDEXP_ROW_X},
{"forcero", 0, XRDEXP_FORCERO, XRDEXP_ROW_X},
{"notwritable", 0, XRDEXP_READONLY,XRDEXP_ROW_X},
{"writable", XRDEXP_NOTRW, 0, XRDEXP_ROW_X},
{"r/w", XRDEXP_NOTRW, 0, XRDEXP_ROW_X},
{"inplace", 0, XRDEXP_INPLACE, XRDEXP_INPLACE_X},
{"outplace", XRDEXP_INPLACE, 0, XRDEXP_INPLACE_X},
// {"nocache", XRDEXP_PFCACHE, 0, XRDEXP_PFCACHE_X},
{"cache", 0, XRDEXP_PFCACHE, XRDEXP_PFCACHE_X},
{"nomig", XRDEXP_MIG, 0, XRDEXP_MIG_X},
{"mig", 0, XRDEXP_MIG, XRDEXP_MIG_X},
{"notmigratable", XRDEXP_MIG, 0, XRDEXP_MIG_X},
{"migratable", 0, XRDEXP_MIG, XRDEXP_MIG_X},
{"nomkeep", XRDEXP_MKEEP, 0, XRDEXP_MKEEP_X},
{"mkeep", 0, XRDEXP_MKEEP, XRDEXP_MKEEP_X},
{"nomlock", XRDEXP_MLOK, 0, XRDEXP_MLOK_X},
{"mlock", 0, XRDEXP_MLOK, XRDEXP_MLOK_X},
{"nommap", XRDEXP_MMAP, 0, XRDEXP_MMAP_X},
{"mmap", 0, XRDEXP_MMAP, XRDEXP_MMAP_X},
{"mwfiles", 0, XRDEXP_MWMODE, XRDEXP_MWMODE_X},
{"nopurge", XRDEXP_PURGE, 0, XRDEXP_PURGE_X},
{"purge", 0, XRDEXP_PURGE, XRDEXP_PURGE_X},
{"nostage", XRDEXP_STAGE, 0, XRDEXP_STAGE_X},
{"stage", 0, XRDEXP_STAGE, XRDEXP_STAGE_X},
{"stage+", 0, XRDEXP_STAGEMM, XRDEXP_STAGE_X},
{"dread", XRDEXP_NODREAD, 0, XRDEXP_DREAD_X},
{"nodread", 0, XRDEXP_NODREAD, XRDEXP_DREAD_X},
{"check", XRDEXP_NOCHECK, 0, XRDEXP_CHECK_X},
{"nocheck", 0, XRDEXP_NOCHECK, XRDEXP_CHECK_X},
{"rcreate", 0, XRDEXP_RCREATE, XRDEXP_RCREATE_X},
{"norcreate", XRDEXP_RCREATE, 0, XRDEXP_RCREATE_X},
{"local", XRDEXP_GLBLRO, XRDEXP_LOCAL, XRDEXP_LOCAL_X},
{"global", XRDEXP_LOCAL, 0, XRDEXP_LOCAL_X},
{"globalro", XRDEXP_LOCAL, XRDEXP_GLBLRO, XRDEXP_GLBLRO_X},
{"lock", XRDEXP_NOLK, 0, XRDEXP_NOLK_X},
{"nolock", 0, XRDEXP_NOLK, XRDEXP_NOLK_X},
{"xattrs", XRDEXP_NOXATTR, 0, XRDEXP_NOXATTR_X},
{"noxattrs", 0, XRDEXP_NOXATTR, XRDEXP_NOXATTR_X}
};
int i, numopts = sizeof(rpopts)/sizeof(struct rpathopts);
char *val;
// Process options
//
val = Config.GetWord();
while (val)
{for (i = 0; i < numopts; i++)
{if (!strcmp(val, rpopts[i].opname))
{Flags = (Flags & ~rpopts[i].oprem)
| rpopts[i].opadd
| rpopts[i].opset;
break;
}
}
if (i >= numopts)
Eroute.Emsg("Export", "warning, invalid path option", val);
val = Config.GetWord();
}
// All done
//
return Flags;
}
/******************************************************************************/
/* P a r s e P a t h */
/******************************************************************************/
/* Function: ParsePath
Purpose: To parse the directive args: <path> [<options>]
<path> the path prefix that applies
<options> a blank separated list of options:
[no]cache - is [not] file caching
[no]check - [don't] check if new file exists in MSS
[no]dread - [don't] read actual directory contents
forcero - force r/w opens to r/o opens
inplace - do not use extended cache for creation
outplace - use extended cache for creation
local - do not export via olbd
global - do export via olbd
globalro - do export via olbd as r/o path
[no]mig - this is [not] a migratable name space
[no]mkeep - this is [not] a memory keepable name space
[no]mlock - this is [not] a memory lockable name space
[no]mmap - this is [not] a memory mappable name space
[no]rcreate - [don't] create file in MSS as well
r/o - do not allow modifications (read/only)
r/w - path is writable/modifiable
[no]stage - [don't] stage in files.
Output: XrdOucPList object upon success or 0 upon failure.
*/
XrdOucPList *XrdOucExport::ParsePath(XrdOucStream &Config, XrdSysError &Eroute,
XrdOucPListAnchor &Export,
unsigned long long Defopts)
{
XrdOucPList *plp;
char *path, pbuff[1024];
unsigned long long rpval;
// Get the path
//
path = Config.GetWord();
if (!path || !path[0])
{Eroute.Emsg("Export", "path not specified"); return 0;}
strlcpy(pbuff, path, sizeof(pbuff));
// Handle object ID specification
//
if (*pbuff == '*') pbuff[1] = 0;
// Process path options and apply defaults to any unspecified otions
//
rpval = ParseDefs(Config, Eroute, 0);
rpval = rpval | (Defopts & (~(rpval >> XRDEXP_MASKSHIFT)))
| (Defopts & (~(rpval & ~XRDEXP_SETTINGS)));
// Make sure that we have no conflicting options
//
if ((rpval & XRDEXP_MEMAP) && !(rpval & XRDEXP_NOTRW))
{Eroute.Emsg("config", "warning, file memory mapping forced path", path,
"to be readonly");
rpval |= XRDEXP_FORCERO;
}
// noxattr conflicts with mig or purge
//
if ((rpval & XRDEXP_NOXATTR) && (rpval & XRDEXP_MIGPRG))
{Eroute.Emsg("config", "noxattrs attribute is incompatible with "
"mig and purge attributes.");
return 0;
}
// Update the export list. If this path is being modified, turn off all bits
// in the old path specified in the new path and then set the new bits.
//
if ((plp = Export.Match(pbuff)))
{unsigned long long Opts = rpval >> XRDEXP_MASKSHIFT;
Opts = (plp->Flag() & ~Opts) | rpval;
plp->Set(Opts);
} else {
plp = new XrdOucPList(pbuff,rpval);
Export.Insert(plp);
}
// Return the path specification
//
return plp;
}