XRootD
XrdPosix.cc
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1 /******************************************************************************/
2 /* */
3 /* X r d P o s i x . c c */
4 /* */
5 /* (c) 2005 by the Board of Trustees of the Leland Stanford, Jr., University */
6 /* All Rights Reserved */
7 /* Produced by Andrew Hanushevsky for Stanford University under contract */
8 /* DE-AC02-76-SFO0515 with the Department of Energy */
9 /* */
10 /* This file is part of the XRootD software suite. */
11 /* */
12 /* XRootD is free software: you can redistribute it and/or modify it under */
13 /* the terms of the GNU Lesser General Public License as published by the */
14 /* Free Software Foundation, either version 3 of the License, or (at your */
15 /* option) any later version. */
16 /* */
17 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */
18 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
19 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
20 /* License for more details. */
21 /* */
22 /* You should have received a copy of the GNU Lesser General Public License */
23 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
24 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
25 /* */
26 /* The copyright holder's institutional names and contributor's names may not */
27 /* be used to endorse or promote products derived from this software without */
28 /* specific prior written permission of the institution or contributor. */
29 /******************************************************************************/
30 
31 #include <cstdarg>
32 #include <cstdio>
33 #include <cstdlib>
34 #include <sys/param.h>
35 #include <sys/types.h>
36 #include <sys/stat.h>
37 #include <fcntl.h>
38 #include <unistd.h>
39 #include <sys/uio.h>
40 
41 #include "XrdSys/XrdSysHeaders.hh"
45 
46 /******************************************************************************/
47 /* G l o b a l O b j e c t s */
48 /******************************************************************************/
49 
51 
53 
54 extern XrdPosixLinkage Xunix;
55 
56 /******************************************************************************/
57 /* U t i l i t y F u n c t i o n s */
58 /******************************************************************************/
59 
60 #ifdef MUSL
61 #include <stdio_ext.h>
62 #endif
63 
64 static inline void fseterr(FILE *fp)
65 {
66  /* Most systems provide FILE as a struct and the necessary bitmask in
67  <stdio.h>, because they need it for implementing getc() and putc() as
68  fast macros. This function is based on gnulib's fseterr.c */
69 #if defined _IO_ERR_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
70  /* GNU libc, BeOS, Haiku, Linux libc5 */
71  fp->_flags |= _IO_ERR_SEEN;
72 #elif defined __sferror || defined __APPLE__ || defined __DragonFly__ || defined __FreeBSD__ || defined __ANDROID__
73  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
74  fp->_flags |= __SERR;
75 #elif defined _IOERR
76  /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
77  fp->_flag |= _IOERR;
78 #elif defined __UCLIBC__ /* uClibc */
79  fp->__modeflags |= __FLAG_ERROR;
80 #elif defined MUSL /* musl libc */
81  __fseterr(fp);
82 #else
83  #error "Unsupported platform! Please report it as a bug."
84 #endif
85 }
86 
87 static inline void fseteof(FILE *fp)
88 {
89  /* Most systems provide FILE as a struct and the necessary bitmask in
90  <stdio.h>, because they need it for implementing getc() and putc() as
91  fast macros. */
92 #if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
93  /* GNU libc, BeOS, Haiku, Linux libc5 */
94  fp->_flags |= _IO_EOF_SEEN;
95 #elif defined __sferror || defined __APPLE__ || defined __DragonFly__ || defined __ANDROID__
96  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
97  fp->_flags |= __SEOF;
98 #elif defined _IOEOF
99  /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
100  fp->_flag |= _IOEOF;
101 #elif defined __UCLIBC__ /* uClibc */
102  fp->__modeflags |= __FLAG_EOF;
103 #else
104  (void) fseek(fp, 0L, SEEK_END);
105 #endif
106 }
107 
108 /******************************************************************************/
109 /* X r d P o s i x _ A c c e s s */
110 /******************************************************************************/
111 
112 extern "C"
113 {
114 int XrdPosix_Access(const char *path, int amode)
115 {
116  char *myPath, buff[2048];
117 
118 // Make sure a path was passed
119 //
120  if (!path) {errno = EFAULT; return -1;}
121 
122 // Return the results of a mkdir of a Unix file system
123 //
124  if (!(myPath = XrootPath.URL(path, buff, sizeof(buff))))
125  return Xunix.Access( path, amode);
126 
127 // Return the results of our version of access()
128 //
129  return Xroot.Access(myPath, amode);
130 }
131 }
132 
133 /******************************************************************************/
134 /* X r d P o s i x _ A c l */
135 /******************************************************************************/
136 
137 // This is a required addition for Solaris 10+ systems
138 
139 extern "C"
140 {
141 int XrdPosix_Acl(const char *path, int cmd, int nentries, void *aclbufp)
142 {
143  return (XrootPath.URL(path, 0, 0)
144  ? Xunix.Acl("/tmp", cmd,nentries,aclbufp)
145  : Xunix.Acl(path, cmd,nentries,aclbufp));
146 }
147 }
148 
149 /******************************************************************************/
150 /* X r d P o s i x _ C h d i r */
151 /******************************************************************************/
152 
153 extern "C"
154 {
155 int XrdPosix_Chdir(const char *path)
156 {
157  int rc;
158 
159 // Set the working directory if the actual chdir succeeded
160 //
161  if (!(rc = Xunix.Chdir(path))) XrootPath.CWD(path);
162  return rc;
163 }
164 }
165 
166 /******************************************************************************/
167 /* X r d P o s i x _ C l o s e */
168 /******************************************************************************/
169 
170 extern "C"
171 {
172 int XrdPosix_Close(int fildes)
173 {
174 
175 // Return result of the close
176 //
177  return (Xroot.myFD(fildes) ? Xroot.Close(fildes) : Xunix.Close(fildes));
178 }
179 }
180 
181 /******************************************************************************/
182 /* X r d P o s i x _ C l o s e d i r */
183 /******************************************************************************/
184 
185 extern "C"
186 {
187 int XrdPosix_Closedir(DIR *dirp)
188 {
189 
190  return (Xroot.isXrootdDir(dirp) ? Xroot.Closedir(dirp)
191  : Xunix.Closedir(dirp));
192 }
193 }
194 
195 /******************************************************************************/
196 /* X r d P o s i x _ C r e a t */
197 /******************************************************************************/
198 
199 extern "C"
200 {
201 int XrdPosix_Creat(const char *path, mode_t mode)
202 {
203  extern int XrdPosix_Open(const char *path, int oflag, ...);
204 
205  return XrdPosix_Open(path, O_WRONLY | O_CREAT | O_TRUNC, mode);
206 }
207 }
208 
209 /******************************************************************************/
210 /* X r d P o s i x _ F c l o s e */
211 /******************************************************************************/
212 
213 extern "C"
214 {
215 int XrdPosix_Fclose(FILE *stream)
216 {
217  int nullfd = fileno(stream);
218 
219 // Close the associated file
220 //
221  if (Xroot.myFD(nullfd)) Xroot.Close(nullfd);
222 
223 // Now close the stream
224 //
225  return Xunix.Fclose(stream);
226 }
227 }
228 
229 /******************************************************************************/
230 /* X r d P o s i x _ F c n t l */
231 /******************************************************************************/
232 
233 extern "C"
234 {
235 int XrdPosix_Fcntl(int fd, int cmd, ...)
236 {
237  va_list ap;
238  void *theArg;
239 
240  if (Xroot.myFD(fd)) return 0;
241  va_start(ap, cmd);
242  theArg = va_arg(ap, void *);
243  va_end(ap);
244  return Xunix.Fcntl64(fd, cmd, theArg);
245 }
246 }
247 
248 /******************************************************************************/
249 /* X r d P o s i x _ F d a t a s y n c */
250 /******************************************************************************/
251 
252 extern "C"
253 {
254 int XrdPosix_Fdatasync(int fildes)
255 {
256 
257 // Return the result of the sync
258 //
259  return (Xroot.myFD(fildes) ? Xroot.Fsync(fildes)
260  : Xunix.Fsync(fildes));
261 }
262 }
263 
264 /******************************************************************************/
265 /* X r d P o s i x _ F g e t x a t t r */
266 /******************************************************************************/
267 
268 #if defined(__linux__) || defined(__GNU__) || (defined(__FreeBSD_kernel__) && defined(__GLIBC__))
269 extern "C"
270 {
271 long long XrdPosix_Fgetxattr (int fd, const char *name, void *value,
272  unsigned long long size)
273 {
274  if (Xroot.myFD(fd)) {errno = ENOTSUP; return -1;}
275  return Xunix.Fgetxattr(fd, name, value, size);
276 }
277 }
278 #endif
279 
280 /******************************************************************************/
281 /* X r d P o s i x _ F f l u s h */
282 /******************************************************************************/
283 
284 extern "C"
285 {
286 int XrdPosix_Fflush(FILE *stream)
287 {
288 
289 // Return the result of the fseek
290 //
291  if (!stream || !Xroot.myFD(fileno(stream)))
292  return Xunix.Fflush(stream);
293 
294  return Xroot.Fsync(fileno(stream));
295 }
296 }
297 
298 /******************************************************************************/
299 /* X r d P o s i x _ F o p e n */
300 /******************************************************************************/
301 
302 #define ISMODE(x) !strcmp(mode, x)
303 
304 extern "C"
305 {
306 FILE *XrdPosix_Fopen(const char *path, const char *mode)
307 {
308  char *myPath, buff[2048];
309  int erc, fd, omode;
310  FILE *stream;
311 
312 // Transfer to unix if this is not our path
313 //
314  if (!(myPath = XrootPath.URL(path, buff, sizeof(buff))))
315  return Xunix.Fopen64(path, mode);
316 
317 // Translate the mode flags
318 //
319  if (ISMODE("r") || ISMODE("rb")) omode = O_RDONLY;
320  else if (ISMODE("w") || ISMODE("wb")) omode = O_WRONLY
321  | O_CREAT | O_TRUNC;
322  else if (ISMODE("a") || ISMODE("ab")) omode = O_APPEND;
323  else if (ISMODE("r+") || ISMODE("rb+") || ISMODE("r+b")) omode = O_RDWR;
324  else if (ISMODE("w+") || ISMODE("wb+") || ISMODE("w+b")) omode = O_RDWR
325  | O_CREAT | O_TRUNC;
326  else if (ISMODE("a+") || ISMODE("ab+") || ISMODE("a+b")) omode = O_APPEND;
327  else {errno = EINVAL; return 0;}
328 
329 // Now open the file
330 //
331  if ((fd = Xroot.Open(myPath, omode | XrdPosixXrootd::isStream , 0)) < 0)
332  return 0;
333 
334 // First obtain a free stream
335 //
336  if (!(stream = fdopen(fd, mode)))
337  {erc = errno; Xroot.Close(fd); errno = erc;}
338 
339 // All done
340 //
341  return stream;
342 }
343 }
344 
345 /******************************************************************************/
346 /* X r d P o s i x _ F r e a d */
347 /******************************************************************************/
348 
349 extern "C"
350 {
351 size_t XrdPosix_Fread(void *ptr, size_t size, size_t nitems, FILE *stream)
352 {
353  ssize_t bytes;
354  size_t rc = 0;
355  int fd = fileno(stream);
356 
357  if (!Xroot.myFD(fd)) return Xunix.Fread(ptr, size, nitems, stream);
358 
359  bytes = Xroot.Read(fd, ptr, size*nitems);
360 
361 // Get the right return code. Note that we cannot emulate the flags in sunx86
362 //
363  if (bytes > 0 && size) rc = bytes/size;
364  else if (bytes < 0) fseterr(stream);
365  else fseteof(stream);
366 
367  return rc;
368 }
369 }
370 
371 /******************************************************************************/
372 /* X r d P o s i x _ F s e e k */
373 /******************************************************************************/
374 
375 extern "C"
376 {
377 int XrdPosix_Fseek(FILE *stream, long offset, int whence)
378 {
379 
380 // Return the result of the fseek
381 //
382  if (!Xroot.myFD(fileno(stream)))
383  return Xunix.Fseek( stream, offset, whence);
384 
385  return (Xroot.Lseek(fileno(stream), offset, whence) < 0 ? -1 : 0);
386 }
387 }
388 
389 /******************************************************************************/
390 /* X r d P o s i x _ F s e e k o */
391 /******************************************************************************/
392 
393 extern "C"
394 {
395 int XrdPosix_Fseeko(FILE *stream, long long offset, int whence)
396 {
397 
398 // Return the result of the fseek
399 //
400  if (!Xroot.myFD(fileno(stream)))
401  return Xunix.Fseeko64(stream, offset, whence);
402 
403  return (Xroot.Lseek(fileno(stream), offset, whence) < 0 ? -1 : 0);
404 }
405 }
406 
407 /******************************************************************************/
408 /* X r d P o s i x _ F s t a t */
409 /******************************************************************************/
410 
411 extern "C"
412 {
413 int XrdPosix_Fstat(int fildes, struct stat *buf)
414 {
415 
416 // Return result of the close
417 //
418  return (Xroot.myFD(fildes)
419  ? Xroot.Fstat(fildes, buf)
420 #if defined(__linux__) and defined(_STAT_VER)
421  : Xunix.Fstat64(_STAT_VER, fildes, (struct stat64 *)buf));
422 #else
423  : Xunix.Fstat64( fildes, (struct stat64 *)buf));
424 #endif
425 }
426 
427 #ifdef __linux__
428 int XrdPosix_FstatV(int ver, int fildes, struct stat *buf)
429 {
430  return (Xroot.myFD(fildes)
431  ? Xroot.Fstat(fildes, buf)
432 #ifdef _STAT_VER
433  : Xunix.Fstat64(ver, fildes, (struct stat64 *)buf));
434 #else
435  : Xunix.Fstat64( fildes, (struct stat64 *)buf));
436 #endif
437 }
438 #endif
439 }
440 
441 /******************************************************************************/
442 /* X r d P o s i x _ F s y n c */
443 /******************************************************************************/
444 
445 extern "C"
446 {
447 int XrdPosix_Fsync(int fildes)
448 {
449 
450 // Return the result of the sync
451 //
452  return (Xroot.myFD(fildes) ? Xroot.Fsync(fildes)
453  : Xunix.Fsync(fildes));
454 }
455 }
456 
457 /******************************************************************************/
458 /* X r d P o s i x _ F t e l l */
459 /******************************************************************************/
460 
461 extern "C"
462 {
463 long XrdPosix_Ftell(FILE *stream)
464 {
465 
466 // Return the result of the tell
467 //
468  if (!Xroot.myFD(fileno(stream))) return Xunix.Ftell(stream);
469 
470  return static_cast<long>(Xroot.Lseek(fileno(stream), 0, SEEK_CUR));
471 }
472 }
473 
474 /******************************************************************************/
475 /* X r d P o s i x _ F t e l l o */
476 /******************************************************************************/
477 
478 extern "C"
479 {
480 long long XrdPosix_Ftello(FILE *stream)
481 {
482 
483 // Return the result of the tell
484 //
485  if (!Xroot.myFD(fileno(stream))) return Xunix.Ftello64(stream);
486 
487  return Xroot.Lseek(fileno(stream), 0, SEEK_CUR);
488 }
489 }
490 
491 /******************************************************************************/
492 /* X r d P o s i x _ F t r u n c a t e */
493 /******************************************************************************/
494 
495 extern "C"
496 {
497 int XrdPosix_Ftruncate(int fildes, long long offset)
498 {
499 
500 // Return the result of the ftruncate
501 //
502  return (Xroot.myFD(fildes) ? Xroot.Ftruncate (fildes, offset)
503  : Xunix.Ftruncate64(fildes, offset));
504 }
505 }
506 
507 /******************************************************************************/
508 /* X r d P o s i x _ F w r i t e */
509 /******************************************************************************/
510 
511 extern "C"
512 {
513 size_t XrdPosix_Fwrite(const void *ptr, size_t size, size_t nitems, FILE *stream)
514 {
515  size_t bytes, rc = 0;
516  int fd = fileno(stream);
517 
518  if (!Xroot.myFD(fd)) return Xunix.Fwrite(ptr, size, nitems, stream);
519 
520  bytes = Xroot.Write(fd, ptr, size*nitems);
521 
522 // Get the right return code.
523 //
524  if (bytes > 0 && size) rc = bytes/size;
525  else fseterr(stream);
526 
527  return rc;
528 }
529 }
530 
531 /******************************************************************************/
532 /* X r d P o s i x _ G e t x a t t r */
533 /******************************************************************************/
534 
535 #if defined(__linux__) || defined(__GNU__) || (defined(__FreeBSD_kernel__) && defined(__GLIBC__))
536 extern "C"
537 {
538 long long XrdPosix_Getxattr (const char *path, const char *name, void *value,
539  unsigned long long size)
540 {
541  char *myPath, buff[2048];
542 
543  if (!(myPath = XrootPath.URL(path, buff, sizeof(buff))))
544  return Xunix.Getxattr(path, name, value, size);
545 
546  return Xroot.Getxattr(myPath, name, value, size);
547 }
548 }
549 #endif
550 
551 /******************************************************************************/
552 /* X r d P o s i x _ L g e t x a t t r */
553 /******************************************************************************/
554 
555 #if defined(__linux__) || defined(__GNU__) || (defined(__FreeBSD_kernel__) && defined(__GLIBC__))
556 extern "C"
557 {
558 long long XrdPosix_Lgetxattr (const char *path, const char *name, void *value,
559  unsigned long long size)
560 {
561  if (XrootPath.URL(path, 0, 0)) {errno = ENOTSUP; return -1;}
562  return Xunix.Lgetxattr(path, name, value, size);
563 }
564 }
565 #endif
566 
567 /******************************************************************************/
568 /* X r d P o s i x _ L s e e k */
569 /******************************************************************************/
570 
571 extern "C"
572 {
573 long long XrdPosix_Lseek(int fildes, long long offset, int whence)
574 {
575 
576 // Return the operation of the seek
577 //
578  return (Xroot.myFD(fildes) ? Xroot.Lseek (fildes, offset, whence)
579  : Xunix.Lseek64(fildes, offset, whence));
580 }
581 }
582 
583 /******************************************************************************/
584 /* X r d P o s i x _ L s t a t */
585 /******************************************************************************/
586 
587 extern "C"
588 {
589 int XrdPosix_Lstat(const char *path, struct stat *buf)
590 {
591  char *myPath, buff[2048];
592 
593 // Make sure a path was passed
594 //
595  if (!path) {errno = EFAULT; return -1;}
596 
597 // Return the results of an open of a Unix file
598 //
599  return (!(myPath = XrootPath.URL(path, buff, sizeof(buff)))
600 #if defined(__linux__) and defined(_STAT_VER)
601  ? Xunix.Lstat64(_STAT_VER, path, (struct stat64 *)buf)
602 #else
603  ? Xunix.Lstat64( path, (struct stat64 *)buf)
604 #endif
605  : Xroot.Stat(myPath, buf));
606 }
607 }
608 
609 /******************************************************************************/
610 /* X r d P o s i x _ M k d i r */
611 /******************************************************************************/
612 
613 extern "C"
614 {
615 int XrdPosix_Mkdir(const char *path, mode_t mode)
616 {
617  char *myPath, buff[2048];
618 
619 // Make sure a path was passed
620 //
621  if (!path) {errno = EFAULT; return -1;}
622 
623 // Return the results of a mkdir of a Unix file system
624 //
625  if (!(myPath = XrootPath.URL(path, buff, sizeof(buff))))
626  return Xunix.Mkdir(path, mode);
627 
628 // Return the results of an mkdir of an xrootd file system
629 //
630  return Xroot.Mkdir(myPath, mode);
631 }
632 }
633 
634 /******************************************************************************/
635 /* X r d P o s i x _ O p e n */
636 /******************************************************************************/
637 
638 extern "C"
639 {
640 int XrdPosix_Open(const char *path, int oflag, ...)
641 {
642  char *myPath, buff[2048];
643  va_list ap;
644  int mode;
645 
646 // Make sure a path was passed
647 //
648  if (!path) {errno = EFAULT; return -1;}
649 
650 // Return the results of an open of a Unix file
651 //
652  if (!(myPath = XrootPath.URL(path, buff, sizeof(buff))))
653  {if (!(oflag & O_CREAT)) return Xunix.Open64(path, oflag);
654  va_start(ap, oflag);
655  mode = va_arg(ap, int);
656  va_end(ap);
657  return Xunix.Open64(path, oflag, (mode_t)mode);
658  }
659 
660 // Return the results of an open of an xrootd file
661 //
662  if (!(oflag & O_CREAT)) return Xroot.Open(myPath, oflag);
663  va_start(ap, oflag);
664  mode = va_arg(ap, int);
665  va_end(ap);
666  return Xroot.Open(myPath, oflag, (mode_t)mode);
667 }
668 }
669 
670 /******************************************************************************/
671 /* X r d P o s i x _ O p e n d i r */
672 /******************************************************************************/
673 
674 extern "C"
675 {
676 DIR* XrdPosix_Opendir(const char *path)
677 {
678  char *myPath, buff[2048];
679 
680 // Make sure a path was passed
681 //
682  if (!path) {errno = EFAULT; return 0;}
683 
684 // Unix opendir
685 //
686  if (!(myPath = XrootPath.URL(path, buff, sizeof(buff))))
687  return Xunix.Opendir(path);
688 
689 // Xrootd opendir
690 //
691  return Xroot.Opendir(myPath);
692 }
693 }
694 
695 /******************************************************************************/
696 /* X r d P o s i x _ P a t h c o n f */
697 /******************************************************************************/
698 
699 // This is a required addition for Solaris 10+ systems
700 
701 extern "C"
702 {
703 long XrdPosix_Pathconf(const char *path, int name)
704 {
705  return (XrootPath.URL(path, 0, 0) ? Xunix.Pathconf("/tmp", name)
706  : Xunix.Pathconf(path, name));
707 }
708 }
709 
710 /******************************************************************************/
711 /* X r d P o s i x _ P r e a d */
712 /******************************************************************************/
713 
714 extern "C"
715 {
716 long long XrdPosix_Pread(int fildes, void *buf, unsigned long long nbyte,
717  long long offset)
718 {
719 
720 // Return the results of the read
721 //
722  return (Xroot.myFD(fildes) ? Xroot.Pread (fildes, buf, nbyte, offset)
723  : Xunix.Pread64(fildes, buf, nbyte, offset));
724 }
725 }
726 
727 /******************************************************************************/
728 /* X r d P o s i x _ P w r i t e */
729 /******************************************************************************/
730 
731 extern "C"
732 {
733 long long XrdPosix_Pwrite(int fildes, const void *buf, unsigned long long nbyte,
734  long long offset)
735 {
736 
737 // Return the results of the write
738 //
739  return (Xroot.myFD(fildes) ? Xroot.Pwrite (fildes, buf, nbyte, offset)
740  : Xunix.Pwrite64(fildes, buf, nbyte, offset));
741 }
742 }
743 
744 /******************************************************************************/
745 /* X r d P o s i x _ R e a d */
746 /******************************************************************************/
747 
748 extern "C"
749 {
750 long long XrdPosix_Read(int fildes, void *buf, unsigned long long nbyte)
751 {
752 
753 // Return the results of the read
754 //
755  return (Xroot.myFD(fildes) ? Xroot.Read(fildes, buf, nbyte)
756  : Xunix.Read(fildes, buf, nbyte));
757 }
758 }
759 
760 /******************************************************************************/
761 /* X r d P o s i x _ R e a d v */
762 /******************************************************************************/
763 
764 extern "C"
765 {
766 long long XrdPosix_Readv(int fildes, const struct iovec *iov, int iovcnt)
767 {
768 
769 // Return results of the readv
770 //
771  return (Xroot.myFD(fildes) ? Xroot.Readv(fildes, iov, iovcnt)
772  : Xunix.Readv(fildes, iov, iovcnt));
773 }
774 }
775 
776 /******************************************************************************/
777 /* X r d P o s i x _ R e a d d i r */
778 /******************************************************************************/
779 
780 extern "C"
781 {
782 // On some platforms both 32- and 64-bit versions are callable. so do the same
783 //
784 struct dirent * XrdPosix_Readdir (DIR *dirp)
785 {
786 
787 // Return result of readdir
788 //
789  return (Xroot.isXrootdDir(dirp) ? Xroot.Readdir(dirp)
790  : Xunix.Readdir(dirp));
791 }
792 
793 struct dirent64 * XrdPosix_Readdir64(DIR *dirp)
794 {
795 
796 // Return result of readdir
797 //
798  return (Xroot.isXrootdDir(dirp) ? Xroot.Readdir64(dirp)
799  : Xunix.Readdir64(dirp));
800 }
801 }
802 
803 /******************************************************************************/
804 /* X r d P o s i x _ R e a d d i r _ r */
805 /******************************************************************************/
806 
807 extern "C"
808 {
809 int XrdPosix_Readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result)
810 {
811 
812 // Return result of readdir
813 //
814  return (Xroot.isXrootdDir(dirp) ? Xroot.Readdir_r(dirp,entry,result)
815  : Xunix.Readdir_r(dirp,entry,result));
816 }
817 
818 int XrdPosix_Readdir64_r(DIR *dirp, struct dirent64 *entry, struct dirent64 **result)
819 {
820 
821 // Return result of readdir
822 //
823  return (Xroot.isXrootdDir(dirp) ? Xroot.Readdir64_r(dirp,entry,result)
824  : Xunix.Readdir64_r(dirp,entry,result));
825 }
826 }
827 
828 /******************************************************************************/
829 /* X r d P o s i x _ R e n a m e */
830 /******************************************************************************/
831 
832 extern "C"
833 {
834 int XrdPosix_Rename(const char *oldpath, const char *newpath)
835 {
836  char *oldPath, buffold[2048], *newPath, buffnew[2048];
837 
838 // Make sure a path was passed
839 //
840  if (!oldpath || !newpath) {errno = EFAULT; return -1;}
841 
842 // Return the results of a mkdir of a Unix file system
843 //
844  if (!(oldPath = XrootPath.URL(oldpath, buffold, sizeof(buffold)))
845  || !(newPath = XrootPath.URL(newpath, buffnew, sizeof(buffnew))))
846  return Xunix.Rename(oldpath, newpath);
847 
848 // Return the results of an mkdir of an xrootd file system
849 //
850  return Xroot.Rename(oldPath, newPath);
851 }
852 }
853 
854 /******************************************************************************/
855 /* X r d P o s i x _ R e w i n d d i r */
856 /******************************************************************************/
857 
858 extern "C"
859 {
860 void XrdPosix_Rewinddir(DIR *dirp)
861 {
862 
863 // Return result of rewind
864 //
865  return (Xroot.isXrootdDir(dirp) ? Xroot.Rewinddir(dirp)
866  : Xunix.Rewinddir(dirp));
867 }
868 }
869 
870 /******************************************************************************/
871 /* X r d P o s i x _ R m d i r */
872 /******************************************************************************/
873 
874 extern "C"
875 {
876 int XrdPosix_Rmdir(const char *path)
877 {
878  char *myPath, buff[2048];
879 
880 // Make sure a path was passed
881 //
882  if (!path) {errno = EFAULT; return -1;}
883 
884 // Return the results of a mkdir of a Unix file system
885 //
886  if (!(myPath = XrootPath.URL(path, buff, sizeof(buff))))
887  return Xunix.Rmdir(path);
888 
889 // Return the results of an mkdir of an xrootd file system
890 //
891  return Xroot.Rmdir(myPath);
892 }
893 }
894 
895 /******************************************************************************/
896 /* X r d P o s i x _ S e e k d i r */
897 /******************************************************************************/
898 
899 extern "C"
900 {
901 void XrdPosix_Seekdir(DIR *dirp, long loc)
902 {
903 
904 // Call seekdir
905 //
906  (Xroot.isXrootdDir(dirp) ? Xroot.Seekdir(dirp, loc)
907  : Xunix.Seekdir(dirp, loc));
908 }
909 }
910 
911 /******************************************************************************/
912 /* X r d P o s i x _ S t a t */
913 /******************************************************************************/
914 
915 extern "C"
916 {
917 int XrdPosix_Stat(const char *path, struct stat *buf)
918 {
919  char *myPath, buff[2048];
920 
921 // Make sure a path was passed
922 //
923  if (!path) {errno = EFAULT; return -1;}
924 
925 // Return the results of an open of a Unix file
926 //
927  return (!(myPath = XrootPath.URL(path, buff, sizeof(buff)))
928 #if defined(__linux__) and defined(_STAT_VER)
929  ? Xunix.Stat64(_STAT_VER, path, (struct stat64 *)buf)
930 #else
931  ? Xunix.Stat64( path, (struct stat64 *)buf)
932 #endif
933  : Xroot.Stat(myPath, buf));
934 }
935 }
936 
937 /******************************************************************************/
938 /* X r d P o s i x _ S t a t f s */
939 /******************************************************************************/
940 
941 extern "C"
942 {
943 int XrdPosix_Statfs(const char *path, struct statfs *buf)
944 {
945  char *myPath, buff[2048];
946 
947 // Make sure a path was passed
948 //
949  if (!path) {errno = EFAULT; return -1;}
950 
951 // Return the results of an open of a Unix file
952 //
953  return ((myPath = XrootPath.URL(path, buff, sizeof(buff)))
954  ? Xroot.Statfs(myPath, buf)
955  : Xunix.Statfs64(path, (struct statfs64 *)buf));
956 }
957 }
958 
959 /******************************************************************************/
960 /* X r d P o s i x _ S t a t v f s */
961 /******************************************************************************/
962 
963 extern "C"
964 {
965 int XrdPosix_Statvfs(const char *path, struct statvfs *buf)
966 {
967  char *myPath, buff[2048];
968 
969 // Make sure a path was passed
970 //
971  if (!path) {errno = EFAULT; return -1;}
972 
973 // Return the results of an open of a Unix file
974 //
975  return ((myPath = XrootPath.URL(path, buff, sizeof(buff)))
976  ? Xroot.Statvfs(myPath, buf)
977  : Xunix.Statvfs64(path, (struct statvfs64 *)buf));
978 }
979 }
980 
981 /******************************************************************************/
982 /* X r d P o s i x _ T e l l d i r */
983 /******************************************************************************/
984 
985 extern "C"
986 {
987 long XrdPosix_Telldir(DIR *dirp)
988 {
989 
990 // Return result of telldir
991 //
992  return (Xroot.isXrootdDir(dirp) ? Xroot.Telldir(dirp)
993  : Xunix.Telldir(dirp));
994 }
995 }
996 
997 /******************************************************************************/
998 /* X r d P o s i x _ T r u n c a t e */
999 /******************************************************************************/
1000 
1001 extern "C"
1002 {
1003 int XrdPosix_Truncate(const char *path, long long offset)
1004 {
1005  char *myPath, buff[2048];
1006 
1007 // Make sure a path was passed
1008 //
1009  if (!path) {errno = EFAULT; return -1;}
1010 
1011 // Return the results of a truncate of a Unix file system
1012 //
1013  if (!(myPath = XrootPath.URL(path, buff, sizeof(buff))))
1014  return Xunix.Truncate64(path, offset);
1015 
1016 // Return the results of an truncate of an xrootd file system
1017 //
1018  return Xroot.Truncate(myPath, offset);
1019 }
1020 }
1021 
1022 /******************************************************************************/
1023 /* X r d P o s i x _ U n l i n k */
1024 /******************************************************************************/
1025 
1026 extern "C"
1027 {
1028 int XrdPosix_Unlink(const char *path)
1029 {
1030  char *myPath, buff[2048];
1031 
1032 // Make sure a path was passed
1033 //
1034  if (!path) {errno = EFAULT; return -1;}
1035 
1036 // Return the result of a unlink of a Unix file
1037 //
1038  if (!(myPath = XrootPath.URL(path, buff, sizeof(buff))))
1039  return Xunix.Unlink(path);
1040 
1041 // Return the results of an unlink of an xrootd file
1042 //
1043  return Xroot.Unlink(myPath);
1044 }
1045 }
1046 
1047 /******************************************************************************/
1048 /* X r d P o s i x _ W r i t e */
1049 /******************************************************************************/
1050 
1051 extern "C"
1052 {
1053 long long XrdPosix_Write(int fildes, const void *buf, unsigned long long nbyte)
1054 {
1055 
1056 // Return the results of the write
1057 //
1058  return (Xroot.myFD(fildes) ? Xroot.Write(fildes, buf, nbyte)
1059  : Xunix.Write(fildes, buf, nbyte));
1060 }
1061 }
1062 
1063 /******************************************************************************/
1064 /* X r d P o s i x _ W r i t e v */
1065 /******************************************************************************/
1066 
1067 extern "C"
1068 {
1069 long long XrdPosix_Writev(int fildes, const struct iovec *iov, int iovcnt)
1070 {
1071 
1072 // Return results of the writev
1073 //
1074  return (Xroot.myFD(fildes) ? Xroot.Writev(fildes, iov, iovcnt)
1075  : Xunix.Writev(fildes, iov, iovcnt));
1076 }
1077 }
1078 
1079 /******************************************************************************/
1080 /* X r d P o s i x _ i s M y P a t h */
1081 /******************************************************************************/
1082 
1083 int XrdPosix_isMyPath(const char *path)
1084 {
1085  return (0 != XrootPath.URL(path, 0, 0));
1086 }
1087 
1088 /******************************************************************************/
1089 /* X r d P o s i x _ U R L */
1090 /******************************************************************************/
1091 
1092 char *XrdPosix_URL(const char *path, char *buff, int blen)
1093 {
1094  return XrootPath.URL(path, buff, blen);
1095 }
int stat(const char *path, struct stat *buf)
int statvfs(const char *path, struct statvfs *buf)
int statfs(const char *path, struct statfs *buf)
int statvfs64(const char *path, struct statvfs64 *buf)
int fseek(FILE *stream, long offset, int whence)
int statfs64(const char *path, struct statfs64 *buf)
int stat64(const char *path, struct stat64 *buf)
int XrdPosix_Statfs(const char *path, struct statfs *buf)
Definition: XrdPosix.cc:943
long long XrdPosix_Pread(int fildes, void *buf, unsigned long long nbyte, long long offset)
Definition: XrdPosix.cc:716
long long XrdPosix_Write(int fildes, const void *buf, unsigned long long nbyte)
Definition: XrdPosix.cc:1053
#define ISMODE(x)
Definition: XrdPosix.cc:302
long long XrdPosix_Lseek(int fildes, long long offset, int whence)
Definition: XrdPosix.cc:573
long long XrdPosix_Writev(int fildes, const struct iovec *iov, int iovcnt)
Definition: XrdPosix.cc:1069
int XrdPosix_Closedir(DIR *dirp)
Definition: XrdPosix.cc:187
int XrdPosix_Fsync(int fildes)
Definition: XrdPosix.cc:447
static void fseterr(FILE *fp)
Definition: XrdPosix.cc:64
int XrdPosix_isMyPath(const char *path)
Definition: XrdPosix.cc:1083
long long XrdPosix_Ftello(FILE *stream)
Definition: XrdPosix.cc:480
int XrdPosix_Open(const char *path, int oflag,...)
Definition: XrdPosix.cc:640
void XrdPosix_Rewinddir(DIR *dirp)
Definition: XrdPosix.cc:860
long long XrdPosix_Readv(int fildes, const struct iovec *iov, int iovcnt)
Definition: XrdPosix.cc:766
int XrdPosix_Readdir64_r(DIR *dirp, struct dirent64 *entry, struct dirent64 **result)
Definition: XrdPosix.cc:818
int XrdPosix_Close(int fildes)
Definition: XrdPosix.cc:172
void XrdPosix_Seekdir(DIR *dirp, long loc)
Definition: XrdPosix.cc:901
int XrdPosix_Rmdir(const char *path)
Definition: XrdPosix.cc:876
int XrdPosix_Chdir(const char *path)
Definition: XrdPosix.cc:155
FILE * XrdPosix_Fopen(const char *path, const char *mode)
Definition: XrdPosix.cc:306
int XrdPosix_Stat(const char *path, struct stat *buf)
Definition: XrdPosix.cc:917
int XrdPosix_Rename(const char *oldpath, const char *newpath)
Definition: XrdPosix.cc:834
int XrdPosix_Fcntl(int fd, int cmd,...)
Definition: XrdPosix.cc:235
int XrdPosix_Fseek(FILE *stream, long offset, int whence)
Definition: XrdPosix.cc:377
long XrdPosix_Ftell(FILE *stream)
Definition: XrdPosix.cc:463
static void fseteof(FILE *fp)
Definition: XrdPosix.cc:87
int XrdPosix_Readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result)
Definition: XrdPosix.cc:809
long long XrdPosix_Pwrite(int fildes, const void *buf, unsigned long long nbyte, long long offset)
Definition: XrdPosix.cc:733
XrdPosixXrootd Xroot
Definition: XrdPosix.cc:50
int XrdPosix_Mkdir(const char *path, mode_t mode)
Definition: XrdPosix.cc:615
long long XrdPosix_Read(int fildes, void *buf, unsigned long long nbyte)
Definition: XrdPosix.cc:750
int XrdPosix_Fflush(FILE *stream)
Definition: XrdPosix.cc:286
char * XrdPosix_URL(const char *path, char *buff, int blen)
Definition: XrdPosix.cc:1092
XrdPosixXrootPath XrootPath
Definition: XrdPosix.cc:52
DIR * XrdPosix_Opendir(const char *path)
Definition: XrdPosix.cc:676
long XrdPosix_Telldir(DIR *dirp)
Definition: XrdPosix.cc:987
int XrdPosix_Lstat(const char *path, struct stat *buf)
Definition: XrdPosix.cc:589
int XrdPosix_Creat(const char *path, mode_t mode)
Definition: XrdPosix.cc:201
int XrdPosix_Statvfs(const char *path, struct statvfs *buf)
Definition: XrdPosix.cc:965
int XrdPosix_Acl(const char *path, int cmd, int nentries, void *aclbufp)
Definition: XrdPosix.cc:141
int XrdPosix_Fstat(int fildes, struct stat *buf)
Definition: XrdPosix.cc:413
XrdPosixLinkage Xunix
size_t XrdPosix_Fwrite(const void *ptr, size_t size, size_t nitems, FILE *stream)
Definition: XrdPosix.cc:513
int XrdPosix_Fclose(FILE *stream)
Definition: XrdPosix.cc:215
int XrdPosix_Fdatasync(int fildes)
Definition: XrdPosix.cc:254
int XrdPosix_Ftruncate(int fildes, long long offset)
Definition: XrdPosix.cc:497
struct dirent64 * XrdPosix_Readdir64(DIR *dirp)
Definition: XrdPosix.cc:793
long XrdPosix_Pathconf(const char *path, int name)
Definition: XrdPosix.cc:703
int XrdPosix_Truncate(const char *path, long long offset)
Definition: XrdPosix.cc:1003
struct dirent * XrdPosix_Readdir(DIR *dirp)
Definition: XrdPosix.cc:784
int XrdPosix_Unlink(const char *path)
Definition: XrdPosix.cc:1028
size_t XrdPosix_Fread(void *ptr, size_t size, size_t nitems, FILE *stream)
Definition: XrdPosix.cc:351
int XrdPosix_Fseeko(FILE *stream, long long offset, int whence)
Definition: XrdPosix.cc:395
int XrdPosix_Access(const char *path, int amode)
Definition: XrdPosix.cc:114
Retv_Opendir(* Opendir)(Args_Opendir)
Retv_Mkdir(* Mkdir)(Args_Mkdir)
Retv_Readdir64(* Readdir64)(Args_Readdir64)
Retv_Fflush(* Fflush)(Args_Fflush)
Retv_Fstat64(* Fstat64)(Args_Fstat64)
Retv_Fclose(* Fclose)(Args_Fclose)
Retv_Fseek(* Fseek)(Args_Fseek)
Retv_Fwrite(* Fwrite)(Args_Fwrite)
Retv_Acl(* Acl)(Args_Acl)
Retv_Writev(* Writev)(Args_Writev)
Retv_Read(* Read)(Args_Read)
Retv_Fsync(* Fsync)(Args_Fsync)
Retv_Rename(* Rename)(Args_Rename)
Retv_Close(* Close)(Args_Close)
Retv_Statfs64(* Statfs64)(Args_Statfs64)
Retv_Lgetxattr(* Lgetxattr)(Args_Lgetxattr)
Retv_Ftruncate64(* Ftruncate64)(Args_Ftruncate64)
Retv_Rewinddir(* Rewinddir)(Args_Rewinddir)
Retv_Readdir(* Readdir)(Args_Readdir)
Retv_Lseek64(* Lseek64)(Args_Lseek64)
Retv_Statvfs64(* Statvfs64)(Args_Statvfs64)
Retv_Truncate64(* Truncate64)(Args_Truncate64)
Retv_Ftell(* Ftell)(Args_Ftell)
Retv_Fread(* Fread)(Args_Fread)
Retv_Open64(* Open64)(Args_Open64)
Retv_Fopen64(* Fopen64)(Args_Fopen64)
Retv_Telldir(* Telldir)(Args_Telldir)
Retv_Fseeko64(* Fseeko64)(Args_Fseeko64)
Retv_Readv(* Readv)(Args_Readv)
Retv_Stat64(* Stat64)(Args_Stat64)
Retv_Pread64(* Pread64)(Args_Pread64)
Retv_Readdir64_r(* Readdir64_r)(Args_Readdir64_r)
Retv_Fcntl64(* Fcntl64)(Args_Fcntl64)
Retv_Seekdir(* Seekdir)(Args_Seekdir)
Retv_Lstat64(* Lstat64)(Args_Lstat64)
Retv_Chdir(* Chdir)(Args_Chdir)
Retv_Getxattr(* Getxattr)(Args_Getxattr)
Retv_Access(* Access)(Args_Access)
Retv_Closedir(* Closedir)(Args_Closedir)
Retv_Pathconf(* Pathconf)(Args_Pathconf)
Retv_Write(* Write)(Args_Write)
Retv_Readdir_r(* Readdir_r)(Args_Readdir_r)
Retv_Rmdir(* Rmdir)(Args_Rmdir)
Retv_Fgetxattr(* Fgetxattr)(Args_Fgetxattr)
Retv_Unlink(* Unlink)(Args_Unlink)
Retv_Pwrite64(* Pwrite64)(Args_Pwrite64)
Retv_Ftello64(* Ftello64)(Args_Ftello64)
char * URL(const char *path, char *buff, int blen)
void CWD(const char *path)
POSIX interface to XRootD with some extensions, as noted.
static ssize_t Readv(int fildes, const struct iovec *iov, int iovcnt)
Readv() conforms to POSIX.1-2001 readv()
static ssize_t Pread(int fildes, void *buf, size_t nbyte, off_t offset)
Pread() conforms to POSIX.1-2001 pread()
static int Closedir(DIR *dirp)
Closedir() conforms to POSIX.1-2001 closedir()
static void Seekdir(DIR *dirp, long loc)
Seekdir() conforms to POSIX.1-2001 seekdir()
static const int isStream
static int Stat(const char *path, struct stat *buf)
Stat() conforms to POSIX.1-2001 stat()
static int Mkdir(const char *path, mode_t mode)
Mkdir() conforms to POSIX.1-2001 mkdir()
static int Unlink(const char *path)
Unlink() conforms to POSIX.1-2001 unlink()
static int Rmdir(const char *path)
Rmdir() conforms to POSIX.1-2001 rmdir()
static void Rewinddir(DIR *dirp)
Rewinddir() conforms to POSIX.1-2001 rewinddir()
static int Rename(const char *oldpath, const char *newpath)
Rename() conforms to POSIX.1-2001 rename()
static int Close(int fildes)
Close() conforms to POSIX.1-2001 close()
static int Statvfs(const char *path, struct statvfs *buf)
Statvfs() conforms to POSIX.1-2001 statvfs()
static ssize_t Write(int fildes, const void *buf, size_t nbyte)
Write() conforms to POSIX.1-2001 write()
static struct dirent * Readdir(DIR *dirp)
static int Readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result)
static ssize_t Writev(int fildes, const struct iovec *iov, int iovcnt)
Writev() conforms to POSIX.1-2001 writev()
static struct dirent64 * Readdir64(DIR *dirp)
static bool myFD(int fd)
static int Ftruncate(int fildes, off_t offset)
Ftruncate() conforms to POSIX.1-2001 ftruncate()
static long Telldir(DIR *dirp)
Telldir() conforms to POSIX.1-2001 telldir()
static bool isXrootdDir(DIR *dirp)
static int Access(const char *path, int amode)
Access() conforms to POSIX.1-2001 access()
static DIR * Opendir(const char *path)
Opendir() conforms to POSIX.1-2001 opendir()
static int Fsync(int fildes)
Fsync() conforms to POSIX.1-2001 fsync()
static long long Getxattr(const char *path, const char *name, void *value, unsigned long long size)
static int Statfs(const char *path, struct statfs *buf)
static int Readdir64_r(DIR *dirp, struct dirent64 *entry, struct dirent64 **result)
static ssize_t Read(int fildes, void *buf, size_t nbyte)
Read() conforms to POSIX.1-2001 read()
static int Fstat(int fildes, struct stat *buf)
Fstat() conforms to POSIX.1-2001 fstat()
static off_t Lseek(int fildes, off_t offset, int whence)
Lseek() conforms to POSIX.1-2001 lseek()
static int Open(const char *path, int oflag, mode_t mode=0, XrdPosixCallBack *cbP=0)
static ssize_t Pwrite(int fildes, const void *buf, size_t nbyte, off_t offset)
Pwrite() conforms to POSIX.1-2001 pwrite()
static int Truncate(const char *path, off_t offset)
Telldir() conforms to POSIX.1-2001 telldir()