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Reference Guide
XrdProofdSandbox.cxx
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1 // @(#)root/proofd:$Id$
2 // Author: G. Ganis Jan 2008
3 
4 /*************************************************************************
5  * Copyright (C) 1995-2005, Rene Brun and Fons Rademakers. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
11 
12 //////////////////////////////////////////////////////////////////////////
13 // //
14 // XrdProofdSandbox //
15 // //
16 // Authors: G. Ganis, CERN, 2008 //
17 // //
18 // Create and manage a Unix sandbox. //
19 // //
20 //////////////////////////////////////////////////////////////////////////
21 #include "XrdProofdPlatform.h"
22 
23 #include "XrdProofdSandbox.h"
24 #include "XrdSys/XrdSysPriv.hh"
25 
26 // Tracing utilities
27 #include "XrdProofdTrace.h"
28 
29 // Modified via config directives by the manager
31 XrdOucString XrdProofdSandbox::fgWorkdir = "";
33 
34 ////////////////////////////////////////////////////////////////////////////////
35 /// Assert existence on the sandbox for the user defined by 'ui'.
36 /// The sandbox is created under fgWorkdir or $HOME/proof; the boolean
37 /// 'full' controls the set of directories to be asserted: the sub-set
38 /// {cache, packages, .creds} is always asserted; if full is true also
39 /// the sub-dirs {queries, datasets} are asserted.
40 /// If 'changeown' is true the sandbox ownership is set to 'ui'; this
41 /// requires su-privileges.
42 /// The constructor also builds the list of sessions directories in the
43 /// sandbox; directories corresponding to terminated sessions are
44 /// removed if the total number of session directories is larger than
45 /// fgMaxOldSessions .
46 
48  : fChangeOwn(changeown), fUI(ui)
49 {
50  XPDLOC(CMGR, "XrdProofdSandbox")
51 
52  fValid = 0;
53 
54  // The first time fill the info about the owner of this process
55  if (fgUI.fUid < 0)
57 
58  // Default working directory location for the effective user
59  XrdOucString defdir = fgUI.fHomeDir;
60  if (!defdir.endswith('/')) defdir += "/";
61  defdir += ".proof/";
62  XrdOucString initus = ui.fUser[0];
63  int iph = STR_NPOS;
64  if (fgWorkdir.length() > 0) {
65  // The user directory path will be <workdir>/<user>
66  fDir = fgWorkdir;
67  if (fDir.find("<user>") == STR_NPOS) {
68  if (!fDir.endswith('/')) fDir += "/";
69  fDir += "<user>";
70  }
71  // Replace supported place-holders
72  fDir.replace("<workdir>", defdir);
73  // Index of first place-holder
74  iph = fDir.find("<effuser>");
75  int iu = fDir.find("<u>");
76  int ius = fDir.find("<user>");
77  if (iu != STR_NPOS)
78  if ((iph != STR_NPOS && iu < iph) || (iph == STR_NPOS)) iph = iu;
79  if (ius != STR_NPOS)
80  if ((iph != STR_NPOS && ius < iph) || (iph == STR_NPOS)) iph = ius;
81  // Replace supported place-holders
82  fDir.replace("<effuser>", fgUI.fUser);
83  fDir.replace("<u>", initus);
84  fDir.replace("<user>", ui.fUser);
85  } else {
86  if (changeown || ui.fUser == fgUI.fUser) {
87  // Default: $HOME/proof
88  fDir = ui.fHomeDir;
89  if (!fDir.endswith('/'))
90  fDir += "/";
91  fDir += ".proof";
92  } else {
93  // ~daemon_owner/.proof/<user>
94  fDir = fgUI.fHomeDir;
95  if (!fDir.endswith('/'))
96  fDir += "/";
97  fDir += ".proof/";
98  fDir += ui.fUser;
99  }
100  }
101  TRACE(REQ, "work dir = " << fDir);
102 
103  // Make sure the directory exists
104  if (iph > -1) {
105  // Recursively ...
106  XrdOucString path, sb;
107  path.assign(fDir, 0, iph - 1);
108  int from = iph;
109  while ((from = fDir.tokenize(sb, from, '/')) != -1) {
110  path += sb;
111  if (XrdProofdAux::AssertDir(path.c_str(), ui, changeown) == -1) {
112  fErrMsg += "unable to create work dir: ";
113  fErrMsg += path;
114  TRACE(XERR, fErrMsg);
115  return;
116  }
117  path += "/";
118  }
119  } else {
120  if (XrdProofdAux::AssertDir(fDir.c_str(), ui, changeown) == -1) {
121  fErrMsg += "unable to create work dir: ";
122  fErrMsg += fDir;
123  TRACE(XERR, fErrMsg);
124  return;
125  }
126  }
127 
128  // Dirs to be asserted
129  const char *basicdirs[4] = { "/cache", "/packages", "/.creds", "/queries" };
130  int i = 0;
131  int n = (full) ? 4 : 3;
132  for (i = 0; i < n; i++) {
133  XrdOucString dir = fDir;
134  dir += basicdirs[i];
135  if (XrdProofdAux::AssertDir(dir.c_str(), ui, changeown) == -1) {
136  fErrMsg += "unable to create dir: ";
137  fErrMsg += dir;
138  TRACE(XERR, fErrMsg);
139  return;
140  }
141  }
142 
143  // Set validity
144  fValid = 1;
145 
146  // Trim old terminated sessions
147  TrimSessionDirs();
148 }
149 
150 ////////////////////////////////////////////////////////////////////////////////
151 /// Compare times from session tag strings
152 
153 bool XpdSessionTagComp(XrdOucString *&lhs, XrdOucString *&rhs)
154 {
155  if (!lhs || !rhs)
156  return 1;
157 
158  // Left hand side
159  XrdOucString ll(*lhs);
160  ll.erase(ll.rfind('-'));
161  ll.erase(0, ll.rfind('-')+1);
162  int tl = strtol(ll.c_str(), 0, 10);
163 
164  // Right hand side
165  XrdOucString rr(*rhs);
166  rr.erase(rr.rfind('-'));
167  rr.erase(0, rr.rfind('-')+1);
168  int tr = strtol(rr.c_str(), 0, 10);
169 
170  // Done
171  return ((tl < tr) ? 0 : 1);
172 }
173 
174 #if defined(__sun)
175 
176 ////////////////////////////////////////////////////////////////////////////////
177 /// Sort ascendingly the list.
178 /// Function used on Solaris where std::list::sort() does not support an
179 /// alternative comparison algorithm.
180 
181 static void Sort(std::list<XrdOucString *> *lst)
182 {
183  // Check argument
184  if (!lst)
185  return;
186 
187  // If empty or just one element, nothing to do
188  if (lst->size() < 2)
189  return;
190 
191  // Fill a temp array with the current status
192  XrdOucString **ta = new XrdOucString *[lst->size()];
193  std::list<XrdOucString *>::iterator i;
194  int n = 0;
195  for (i = lst->begin(); i != lst->end(); ++i)
196  ta[n++] = *i;
197 
198  // Now start the loops
199  XrdOucString *tmp = 0;
200  bool notyet = 1;
201  int jold = 0;
202  while (notyet) {
203  int j = jold;
204  while (j < n - 1) {
205  if (XpdSessionTagComp(ta[j], ta[j+1]))
206  break;
207  j++;
208  }
209  if (j >= n - 1) {
210  notyet = 0;
211  } else {
212  jold = j + 1;
213  XPDSWAP(ta[j], ta[j+1], tmp);
214  int k = j;
215  while (k > 0) {
216  if (!XpdSessionTagComp(ta[k], ta[k-1])) {
217  XPDSWAP(ta[k], ta[k-1], tmp);
218  } else {
219  break;
220  }
221  k--;
222  }
223  }
224  }
225 
226  // Empty the original list
227  lst->clear();
228 
229  // Fill it again
230  while (n--)
231  lst->push_back(ta[n]);
232 
233  // Clean up
234  delete[] ta;
235 }
236 #endif
237 
238 ////////////////////////////////////////////////////////////////////////////////
239 /// Scan the sandbox for sessions working dirs and return their
240 /// sorted (according to creation time, first is the newest) list
241 /// in 'sdirs'.
242 /// The option 'opt' may have 3 values:
243 /// 0 all working dirs are kept
244 /// 1 active sessions only
245 /// 2 terminated sessions only
246 /// 3 search entry containing 'tag' and fill tag with
247 /// the full entry name; if defined, sdirs is filled
248 /// Returns -1 otherwise in case of failure.
249 /// In case of success returns 0 for opt < 3, 1 if found or 0 if not
250 /// found for opt == 3.
251 
252 int XrdProofdSandbox::GetSessionDirs(int opt, std::list<XrdOucString *> *sdirs,
253  XrdOucString *tag)
254 {
255  XPDLOC(CMGR, "Sandbox::GetSessionDirs")
256 
257  // If unknown take all
258  opt = (opt >= 0 && opt <= 3) ? opt : 0;
259 
260  // Check inputs
261  if ((opt < 3 && !sdirs) || (opt == 3 && !tag)) {
262  TRACE(XERR, "invalid inputs");
263  return -1;
264  }
265 
266  TRACE(DBG, "opt: "<<opt<<", dir: "<<fDir);
267 
268  // Open dir
269  DIR *dir = opendir(fDir.c_str());
270  if (!dir) {
271  TRACE(XERR, "cannot open dir "<<fDir<< " (errno: "<<errno<<")");
272  return -1;
273  }
274 
275  // Scan the directory, and save the paths for terminated sessions
276  // into a list
277  bool found = 0;
278  struct dirent *ent = 0;
279  while ((ent = (struct dirent *)readdir(dir))) {
280  if (!strncmp(ent->d_name, "session-", 8)) {
281  bool keep = 1;
282  if (opt == 3 && tag->length() > 0) {
283  if (strstr(ent->d_name, tag->c_str())) {
284  *tag = ent->d_name;
285  found = 1;
286  }
287  } else {
288  if (opt > 0) {
289  XrdOucString fterm(fDir.c_str());
290  fterm += '/';
291  fterm += ent->d_name;
292  fterm += "/.terminated";
293  int rc = access(fterm.c_str(), F_OK);
294  if ((opt == 1 && rc == 0) || (opt == 2 && rc != 0))
295  keep = 0;
296  }
297  }
298  TRACE(HDBG, "found entry "<<ent->d_name<<", keep: "<<keep);
299  if (sdirs && keep)
300  sdirs->push_back(new XrdOucString(ent->d_name));
301  }
302  }
303 
304  // Close the directory
305  closedir(dir);
306 
307  // Sort the list
308  if (sdirs)
309 #if !defined(__sun)
310  sdirs->sort(&XpdSessionTagComp);
311 #else
312  Sort(sdirs);
313 #endif
314 
315  // Done
316  return ((opt == 3 && found) ? 1 : 0);
317 }
318 
319 ////////////////////////////////////////////////////////////////////////////////
320 /// Record entry for new proofserv session tagged 'tag' in the active
321 /// sessions file (<SandBox>/.sessions). The file is created if needed.
322 /// Return 0 on success, -1 on error.
323 
324 int XrdProofdSandbox::AddSession(const char *tag)
325 {
326  XPDLOC(CMGR, "Sandbox::AddSession")
327 
328  // Check inputs
329  if (!tag) {
330  XPDPRT("invalid input");
331  return -1;
332  }
333  TRACE(DBG, "tag:"<<tag);
334 
335  XrdSysPrivGuard pGuard((uid_t)0, (gid_t)0);
336  if (XpdBadPGuard(pGuard, fUI.fUid) && fChangeOwn) {
337  TRACE(XERR, "could not get privileges");
338  return -1;
339  }
340 
341  // File name
342  XrdOucString fn = fDir;
343  fn += "/.sessions";
344 
345  // Open the file for appending
346  FILE *fact = fopen(fn.c_str(), "a+");
347  if (!fact) {
348  TRACE(XERR, "cannot open file "<<fn<<" for appending (errno: "<<errno<<")");
349  return -1;
350  }
351 
352  // Lock the file
353  lseek(fileno(fact), 0, SEEK_SET);
354  if (lockf(fileno(fact), F_LOCK, 0) == -1) {
355  TRACE(XERR, "cannot lock file "<<fn<<" (errno: "<<errno<<")");
356  fclose(fact);
357  return -1;
358  }
359 
360  bool writeout = 1;
361 
362  // Check if already there
363  std::list<XrdOucString *> actln;
364  char ln[1024];
365  while (fgets(ln, sizeof(ln), fact)) {
366  // Get rid of '\n'
367  if (ln[strlen(ln)-1] == '\n')
368  ln[strlen(ln)-1] = '\0';
369  // Skip empty or comment lines
370  if (strlen(ln) <= 0 || ln[0] == '#')
371  continue;
372  // Count if not the one we want to remove
373  if (strstr(ln, tag))
374  writeout = 0;
375  }
376 
377  // Append the session unique tag
378  if (writeout) {
379  lseek(fileno(fact), 0, SEEK_END);
380  fprintf(fact, "%s\n", tag);
381  }
382 
383  // Unlock the file
384  lseek(fileno(fact), 0, SEEK_SET);
385  if (lockf(fileno(fact), F_ULOCK, 0) == -1)
386  TRACE(XERR, "cannot unlock file "<<fn<<" (errno: "<<errno<<")");
387 
388  // Close the file
389  fclose(fact);
390 
391  // We are done
392  return 0;
393 }
394 
395 ////////////////////////////////////////////////////////////////////////////////
396 /// Guess session tag completing 'tag' (typically "-<pid>") by scanning the
397 /// active session file or the session dir.
398 /// In case of success, tag is filled with the full tag and 0 is returned.
399 /// In case of failure, -1 is returned.
400 
401 int XrdProofdSandbox::GuessTag(XrdOucString &tag, int ridx)
402 {
403  XPDLOC(CMGR, "Sandbox::GuessTag")
404 
405  TRACE(DBG, "tag: "<<tag);
406 
407  bool found = 0;
408  bool last = (tag == "last") ? 1 : 0;
409 
410  if (!last && tag.length() > 0) {
411  // Scan the sessions file
412  XrdOucString fn = fDir;
413  fn += "/.sessions";
414 
415  // Open the file for reading
416  FILE *fact = fopen(fn.c_str(), "a+");
417  if (fact) {
418  // Lock the file
419  if (lockf(fileno(fact), F_LOCK, 0) == 0) {
420  // Read content, if already existing
421  char ln[1024];
422  while (fgets(ln, sizeof(ln), fact)) {
423  // Get rid of '\n'
424  if (ln[strlen(ln)-1] == '\n')
425  ln[strlen(ln)-1] = '\0';
426  // Skip empty or comment lines
427  if (strlen(ln) <= 0 || ln[0] == '#')
428  continue;
429  // Count if not the one we want to remove
430  if (!strstr(ln, tag.c_str())) {
431  tag = ln;
432  found = 1;
433  break;
434  }
435  }
436  // Unlock the file
437  lseek(fileno(fact), 0, SEEK_SET);
438  if (lockf(fileno(fact), F_ULOCK, 0) == -1)
439  TRACE(DBG, "cannot unlock file "<<fn<<" ; fact: "<<fact<<
440  ", fd: "<< fileno(fact) << " (errno: "<<errno<<")");
441 
442  } else {
443  TRACE(DBG, "cannot lock file: "<<fn<<" ; fact: "<<fact<<
444  ", fd: "<< fileno(fact) << " (errno: "<<errno<<")");
445  }
446  // Close the file
447  fclose(fact);
448 
449  } else {
450  TRACE(DBG, "cannot open file "<<fn<<
451  " for reading (errno: "<<errno<<")");
452  }
453  }
454 
455  if (!found) {
456 
457  // Search the tag in the dirs
458  std::list<XrdOucString *> staglst;
459  staglst.clear();
460  int rc = GetSessionDirs(3, &staglst, &tag);
461  if (rc < 0) {
462  TRACE(XERR, "cannot scan dir "<<fDir);
463  return -1;
464  }
465  found = (rc == 1) ? 1 : 0;
466 
467  if (!found && staglst.size() > 0) {
468  // Take last one, if required
469  if (last) {
470  tag = staglst.front()->c_str();
471  found = 1;
472  } else {
473  if (ridx < 0) {
474  int itag = ridx;
475  // Reiterate back
476  std::list<XrdOucString *>::iterator i;
477  for (i = staglst.begin(); i != staglst.end(); i++) {
478  if (itag == 0) {
479  tag = (*i)->c_str();
480  found = 1;
481  break;
482  }
483  itag++;
484  }
485  }
486  }
487  }
488  // Cleanup
489  staglst.clear();
490  // Correct the tag
491  if (found) {
492  tag.replace("session-", "");
493  } else {
494  TRACE(DBG, "tag "<<tag<<" not found in dir");
495  }
496  }
497 
498  // We are done
499  return ((found) ? 0 : -1);
500 }
501 
502 ////////////////////////////////////////////////////////////////////////////////
503 /// Move record for tag from the active sessions file to the old
504 /// sessions file (<SandBox>/.sessions). The active file is removed if
505 /// empty after the operation. The old sessions file is created if needed.
506 /// Return 0 on success, -1 on error.
507 
509 {
510  XPDLOC(CMGR, "Sandbox::RemoveSession")
511 
512  char ln[1024];
513 
514  // Check inputs
515  if (!tag) {
516  TRACE(XERR, "invalid input");
517  return -1;
518  }
519  TRACE(DBG, "tag:"<<tag);
520 
521  XrdSysPrivGuard pGuard((uid_t)0, (gid_t)0);
522  if (XpdBadPGuard(pGuard, fUI.fUid) && fChangeOwn) {
523  TRACE(XERR, "could not get privileges");
524  return -1;
525  }
526 
527  // Update of the active file
528  XrdOucString fna = fDir;
529  fna += "/.sessions";
530 
531  // Open the file
532  FILE *fact = fopen(fna.c_str(), "a+");
533  if (!fact) {
534  TRACE(XERR, "cannot open file "<<fna<<" (errno: "<<errno<<")");
535  return -1;
536  }
537 
538  // Lock the file
539  if (lockf(fileno(fact), F_LOCK, 0) == -1) {
540  TRACE(XERR, "cannot lock file "<<fna<<" (errno: "<<errno<<")");
541  fclose(fact);
542  return -1;
543  }
544 
545  // Read content, if already existing
546  std::list<XrdOucString *> actln;
547  while (fgets(ln, sizeof(ln), fact)) {
548  // Get rid of '\n'
549  if (ln[strlen(ln)-1] == '\n')
550  ln[strlen(ln)-1] = '\0';
551  // Skip empty or comment lines
552  if (strlen(ln) <= 0 || ln[0] == '#')
553  continue;
554  // Count if not the one we want to remove
555  if (!strstr(ln, tag))
556  actln.push_back(new XrdOucString(ln));
557  }
558 
559  // Truncate the file
560  if (ftruncate(fileno(fact), 0) == -1) {
561  TRACE(XERR, "cannot truncate file "<<fna<<" (errno: "<<errno<<")");
562  lseek(fileno(fact), 0, SEEK_SET);
563  if (lockf(fileno(fact), F_ULOCK, 0) != 0)
564  TRACE(XERR, "cannot lockf file "<<fna<<" (errno: "<<errno<<")");
565  fclose(fact);
566  return -1;
567  }
568 
569  // If active sessions still exist, write out new composition
570  bool unlk = 1;
571  if (actln.size() > 0) {
572  unlk = 0;
573  std::list<XrdOucString *>::iterator i;
574  for (i = actln.begin(); i != actln.end(); ++i) {
575  fprintf(fact, "%s\n", (*i)->c_str());
576  delete (*i);
577  }
578  }
579 
580  // Unlock the file
581  lseek(fileno(fact), 0, SEEK_SET);
582  if (lockf(fileno(fact), F_ULOCK, 0) == -1)
583  TRACE(DBG, "cannot unlock file "<<fna<<" (errno: "<<errno<<")");
584 
585  // Close the file
586  fclose(fact);
587 
588  // Unlink the file if empty
589  if (unlk)
590  if (unlink(fna.c_str()) == -1)
591  TRACE(DBG, "cannot unlink file "<<fna<<" (errno: "<<errno<<")");
592 
593  // Flag the session as closed
594  XrdOucString fterm = fDir;
595  fterm += (strstr(tag,"session-")) ? "/" : "/session-";
596  fterm += tag;
597  fterm += "/.terminated";
598  // Create the file
599  FILE *ft = fopen(fterm.c_str(), "w");
600  if (!ft) {
601  TRACE(XERR, "cannot open file "<<fterm<<" (errno: "<<errno<<")");
602  return -1;
603  }
604  fclose(ft);
605 
606  // Done
607  return 0;
608 }
609 
610 ////////////////////////////////////////////////////////////////////////////////
611 /// If the static fgMaxOldLogs > 0, logs for a fgMaxOldLogs number of sessions
612 /// are kept in the sandbox; working dirs for sessions in excess are removed.
613 /// By default logs for the last 10 sessions are kept; the limit can be changed
614 /// via the static method XrdProofdClient::SetMaxOldLogs.
615 /// Return 0 on success, -1 on error.
616 
618 {
619  XPDLOC(CMGR, "Sandbox::TrimSessionDirs")
620 
621  TRACE(DBG, "maxold:"<<fgMaxOldSessions);
622 
623  // To avoid dead locks we must close the file and do the mv actions after
624  XrdOucString tobemv, fnact = fDir;
625  fnact += "/.sessions";
626  FILE *f = fopen(fnact.c_str(), "r");
627  if (f) {
628  char ln[1024];
629  while (fgets(ln, sizeof(ln), f)) {
630  if (ln[strlen(ln)-1] == '\n')
631  ln[strlen(ln)-1] = 0;
632  char *p = strrchr(ln, '-');
633  if (p) {
634  int pid = strtol(p+1, 0, 10);
636  tobemv += ln;
637  tobemv += '|';
638  }
639  }
640  }
641  fclose(f);
642  }
643 
644  XrdSysPrivGuard pGuard((uid_t)0, (gid_t)0);
645  if (XpdBadPGuard(pGuard, fUI.fUid) && fChangeOwn) {
646  TRACE(XERR, "could not get privileges to trim directories");
647  return -1;
648  }
649 
650  // Mv inactive sessions, if needed
651  if (tobemv.length() > 0) {
652  char del = '|';
653  XrdOucString tag;
654  int from = 0;
655  while ((from = tobemv.tokenize(tag, from, del)) != -1) {
656  if (RemoveSession(tag.c_str()) == -1)
657  TRACE(XERR, "problems tagging session as old in sandbox");
658  }
659  }
660 
661  // If a limit on the number of sessions dirs is set, apply it
662  if (fgMaxOldSessions > 0) {
663 
664  // Get list of terminated session working dirs
665  std::list<XrdOucString *> staglst;
666  staglst.clear();
667  if (GetSessionDirs(2, &staglst) != 0) {
668  TRACE(XERR, "cannot get list of dirs ");
669  return -1;
670  }
671  TRACE(DBG, "number of working dirs: "<<staglst.size());
672 
673  if (TRACING(HDBG)) {
674  std::list<XrdOucString *>::iterator i;
675  for (i = staglst.begin(); i != staglst.end(); ++i) {
676  TRACE(HDBG, "found "<<(*i)->c_str());
677  }
678  }
679 
680  // Remove the oldest, if needed
681  while ((int)staglst.size() > fgMaxOldSessions) {
682  XrdOucString *s = staglst.back();
683  if (s) {
684  TRACE(HDBG, "removing "<<s->c_str());
685  // Remove associated workdir
686  XrdOucString rmcmd = "/bin/rm -rf ";
687  rmcmd += fDir;
688  rmcmd += '/';
689  rmcmd += s->c_str();
690  if (system(rmcmd.c_str()) == -1)
691  TRACE(XERR, "cannot invoke system("<<rmcmd<<") (errno: "<<errno<<")");
692  // Delete the string
693  delete s;
694  }
695  // Remove the last element
696  staglst.pop_back();
697  }
698 
699  // Clear the list
700  staglst.clear();
701  }
702 
703  // Done
704  return 0;
705 }
706 
707 
#define TRACING(x)
static int GetUserInfo(const char *usr, XrdProofUI &ui)
Get information about user &#39;usr&#39; in a thread safe way.
int TrimSessionDirs()
If the static fgMaxOldLogs > 0, logs for a fgMaxOldLogs number of sessions are kept in the sandbox; w...
#define TRACE(Flag, Args)
Definition: TGHtml.h:124
#define XPDPRT(x)
static int fgMaxOldSessions
void Sort(Index n, const Element *a, Index *index, Bool_t down=kTRUE)
Definition: TMath.h:989
XrdOucString fUser
Definition: XrdProofdAux.h:40
#define XPDLOC(d, x)
int changeown(const std::string &path, uid_t u, gid_t g)
Change the ownership of &#39;path&#39; to the entity described by {u,g}.
Definition: proofexecv.cxx:803
XrdOucString fErrMsg
#define XpdBadPGuard(g, u)
Definition: XrdProofdAux.h:368
#define XPDSWAP(a, b, t)
Definition: XrdProofdAux.h:364
int GuessTag(XrdOucString &tag, int ridx=1)
Guess session tag completing &#39;tag&#39; (typically "-<pid>") by scanning the active session file or the se...
int AddSession(const char *tag)
Record entry for new proofserv session tagged &#39;tag&#39; in the active sessions file (<SandBox>/.sessions).
int RemoveSession(const char *tag)
Move record for tag from the active sessions file to the old sessions file (<SandBox>/.sessions).
static int AssertDir(const char *path, XrdProofUI ui, bool changeown)
Make sure that &#39;path&#39; exists and is owned by the entity described by &#39;ui&#39;.
double f(double x)
XrdProofdSandbox(XrdProofUI ui, bool full, bool changeown)
Assert existence on the sandbox for the user defined by &#39;ui&#39;.
XrdOucString fDir
bool XpdSessionTagComp(XrdOucString *&lhs, XrdOucString *&rhs)
Compare times from session tag strings.
static XrdProofUI fgUI
XrdOucString fHomeDir
Definition: XrdProofdAux.h:42
static XrdOucString fgWorkdir
static int VerifyProcessByID(int pid, const char *pname="proofserv")
Check if a process named &#39;pname&#39; and process &#39;pid&#39; is still in the process table. ...
int GetSessionDirs(int opt, std::list< XrdOucString *> *sdirs, XrdOucString *tag=0)
Scan the sandbox for sessions working dirs and return their sorted (according to creation time...
const Int_t n
Definition: legend1.C:16