2 Bacula® - The Network Backup Solution
4 Copyright (C) 2003-2008 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version two of the GNU General Public
10 License as published by the Free Software Foundation and included
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of Kern Sibbald.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
29 * Bacula low level File I/O routines. This routine simulates
30 * open(), read(), write(), and close(), but using native routines.
31 * I.e. on Windows, we use Windows APIs.
33 * Kern Sibbald, April MMIII
42 const int dbglvl = 200;
44 int (*plugin_bopen)(BFILE *bfd, const char *fname, int flags, mode_t mode) = NULL;
45 int (*plugin_bclose)(BFILE *bfd) = NULL;
46 ssize_t (*plugin_bread)(BFILE *bfd, void *buf, size_t count) = NULL;
47 ssize_t (*plugin_bwrite)(BFILE *bfd, void *buf, size_t count) = NULL;
48 boffset_t (*plugin_blseek)(BFILE *bfd, boffset_t offset, int whence) = NULL;
52 #include <sys/paths.h>
55 #if !defined(HAVE_FDATASYNC)
60 void pause_msg(const char *file, const char *func, int line, const char *msg)
64 bsnprintf(buf, sizeof(buf), "%s:%s:%d %s", file, func, line, msg);
66 bsnprintf(buf, sizeof(buf), "%s:%s:%d", file, func, line);
68 MessageBox(NULL, buf, "Pause", MB_OK);
72 /* ===============================================================
74 * U N I X AND W I N D O W S
76 * ===============================================================
79 bool is_win32_stream(int stream)
82 case STREAM_WIN32_DATA:
83 case STREAM_WIN32_GZIP_DATA:
84 case STREAM_ENCRYPTED_WIN32_DATA:
85 case STREAM_ENCRYPTED_WIN32_GZIP_DATA:
91 const char *stream_to_ascii(int stream)
96 case STREAM_UNIX_ATTRIBUTES:
97 return _("Unix attributes");
98 case STREAM_FILE_DATA:
99 return _("File data");
100 case STREAM_MD5_DIGEST:
101 return _("MD5 digest");
102 case STREAM_GZIP_DATA:
103 return _("GZIP data");
104 case STREAM_UNIX_ATTRIBUTES_EX:
105 return _("Extended attributes");
106 case STREAM_SPARSE_DATA:
107 return _("Sparse data");
108 case STREAM_SPARSE_GZIP_DATA:
109 return _("GZIP sparse data");
110 case STREAM_PROGRAM_NAMES:
111 return _("Program names");
112 case STREAM_PROGRAM_DATA:
113 return _("Program data");
114 case STREAM_SHA1_DIGEST:
115 return _("SHA1 digest");
116 case STREAM_WIN32_DATA:
117 return _("Win32 data");
118 case STREAM_WIN32_GZIP_DATA:
119 return _("Win32 GZIP data");
120 case STREAM_MACOS_FORK_DATA:
121 return _("MacOS Fork data");
122 case STREAM_HFSPLUS_ATTRIBUTES:
123 return _("HFS+ attribs");
124 case STREAM_UNIX_ACCESS_ACL:
125 return _("Standard Unix ACL attribs");
126 case STREAM_UNIX_DEFAULT_ACL:
127 return _("Default Unix ACL attribs");
128 case STREAM_SHA256_DIGEST:
129 return _("SHA256 digest");
130 case STREAM_SHA512_DIGEST:
131 return _("SHA512 digest");
132 case STREAM_SIGNED_DIGEST:
133 return _("Signed digest");
134 case STREAM_ENCRYPTED_FILE_DATA:
135 return _("Encrypted File data");
136 case STREAM_ENCRYPTED_WIN32_DATA:
137 return _("Encrypted Win32 data");
138 case STREAM_ENCRYPTED_SESSION_DATA:
139 return _("Encrypted session data");
140 case STREAM_ENCRYPTED_FILE_GZIP_DATA:
141 return _("Encrypted GZIP data");
142 case STREAM_ENCRYPTED_WIN32_GZIP_DATA:
143 return _("Encrypted Win32 GZIP data");
144 case STREAM_ENCRYPTED_MACOS_FORK_DATA:
145 return _("Encrypted MacOS fork data");
147 sprintf(buf, "%d", stream);
148 return (const char *)buf;
153 void int64_LE2BE(int64_t* pBE, const int64_t v)
155 /* convert little endian to big endian */
156 if (htonl(1) != 1L) { /* no work if on little endian machine */
157 memcpy(pBE, &v, sizeof(int64_t));
160 uint8_t rv[sizeof(int64_t)];
161 uint8_t *pv = (uint8_t *) &v;
163 for (i = 0; i < 8; i++) {
166 memcpy(pBE, &rv, sizeof(int64_t));
171 void int32_LE2BE(int32_t* pBE, const int32_t v)
173 /* convert little endian to big endian */
174 if (htonl(1) != 1L) { /* no work if on little endian machine */
175 memcpy(pBE, &v, sizeof(int32_t));
178 uint8_t rv[sizeof(int32_t)];
179 uint8_t *pv = (uint8_t *) &v;
181 for (i = 0; i < 4; i++) {
184 memcpy(pBE, &rv, sizeof(int32_t));
189 bool processWin32BackupAPIBlock (BFILE *bfd, void *pBuffer, ssize_t dwSize)
191 /* pByte contains the buffer
192 dwSize the len to be processed. function assumes to be
193 called in successive incremental order over the complete
194 BackupRead stream beginning at pos 0 and ending at the end.
197 PROCESS_WIN32_BACKUPAPIBLOCK_CONTEXT* pContext = &(bfd->win32DecompContext);
198 bool bContinue = false;
199 int64_t dwDataOffset = 0;
202 /* Win32 Stream Header size without name of stream.
203 * = sizeof (WIN32_STREAM_ID)- sizeof(WCHAR*);
205 int32_t dwSizeHeader = 20;
208 if (pContext->liNextHeader >= dwSize) {
209 dwDataLen = dwSize-dwDataOffset;
210 bContinue = false; /* 1 iteration is enough */
212 dwDataLen = pContext->liNextHeader-dwDataOffset;
213 bContinue = true; /* multiple iterations may be necessary */
217 /* copy block of real DATA */
218 if (pContext->bIsInData) {
219 if (bwrite(bfd, ((char *)pBuffer)+dwDataOffset, dwDataLen) != (ssize_t)dwDataLen)
223 if (pContext->liNextHeader < dwSize) {/* is a header in this block ? */
224 int32_t dwOffsetTarget;
225 int32_t dwOffsetSource;
227 if (pContext->liNextHeader < 0) {
228 /* start of header was before this block, so we
229 * continue with the part in the current block
231 dwOffsetTarget = -pContext->liNextHeader;
234 /* start of header is inside of this block */
236 dwOffsetSource = pContext->liNextHeader;
239 int32_t dwHeaderPartLen = dwSizeHeader-dwOffsetTarget;
240 bool bHeaderIsComplete;
242 if (dwHeaderPartLen <= dwSize-dwOffsetSource) {
243 /* header (or rest of header) is completely available
246 bHeaderIsComplete = true;
248 /* header will continue in next block */
249 bHeaderIsComplete = false;
250 dwHeaderPartLen = dwSize-dwOffsetSource;
253 /* copy the available portion of header to persistent copy */
254 memcpy(((char *)&pContext->header_stream)+dwOffsetTarget, ((char *)pBuffer)+dwOffsetSource, dwHeaderPartLen);
256 /* recalculate position of next header */
257 if (bHeaderIsComplete) {
258 /* convert stream name size (32 bit little endian) to machine type */
260 int32_LE2BE (&dwNameSize, pContext->header_stream.dwStreamNameSize);
261 dwDataOffset = dwNameSize+pContext->liNextHeader+dwSizeHeader;
263 /* convert stream size (64 bit little endian) to machine type */
264 int64_LE2BE (&(pContext->liNextHeader), pContext->header_stream.Size);
265 pContext->liNextHeader += dwDataOffset;
267 pContext->bIsInData = pContext->header_stream.dwStreamId == WIN32_BACKUP_DATA;
268 if (dwDataOffset == dwSize)
271 /* stop and continue with next block */
273 pContext->bIsInData = false;
278 /* set "NextHeader" relative to the beginning of the next block */
279 pContext->liNextHeader-= dwSize;
286 /* ===============================================================
290 * ===============================================================
293 #if defined(HAVE_WIN32)
295 void unix_name_to_win32(POOLMEM **win32_name, char *name);
296 extern "C" HANDLE get_osfhandle(int fd);
299 void binit(BFILE *bfd)
301 memset(bfd, 0, sizeof(BFILE));
303 bfd->mode = BF_CLOSED;
304 bfd->use_backup_api = have_win32_api();
305 bfd->cmd_plugin = false;
309 * Enables using the Backup API (win32_data).
310 * Returns 1 if function worked
311 * Returns 0 if failed (i.e. do not have Backup API on this machine)
313 bool set_win32_backup(BFILE *bfd)
315 /* We enable if possible here */
316 bfd->use_backup_api = have_win32_api();
317 return bfd->use_backup_api;
321 bool set_portable_backup(BFILE *bfd)
323 bfd->use_backup_api = false;
327 bool set_cmd_plugin(BFILE *bfd, JCR *jcr)
329 bfd->cmd_plugin = true;
335 * Return 1 if we are NOT using Win32 BackupWrite()
338 bool is_portable_backup(BFILE *bfd)
340 return !bfd->use_backup_api;
343 bool have_win32_api()
345 return p_BackupRead && p_BackupWrite;
350 * Return true if we support the stream
351 * false if we do not support the stream
353 * This code is running under Win32, so we
354 * do not need #ifdef on MACOS ...
356 bool is_restore_stream_supported(int stream)
360 /* Streams known not to be supported */
362 case STREAM_GZIP_DATA:
363 case STREAM_SPARSE_GZIP_DATA:
364 case STREAM_WIN32_GZIP_DATA:
366 case STREAM_MACOS_FORK_DATA:
367 case STREAM_HFSPLUS_ATTRIBUTES:
368 case STREAM_ENCRYPTED_MACOS_FORK_DATA:
373 case STREAM_GZIP_DATA:
374 case STREAM_SPARSE_GZIP_DATA:
375 case STREAM_WIN32_GZIP_DATA:
377 case STREAM_WIN32_DATA:
378 case STREAM_UNIX_ATTRIBUTES:
379 case STREAM_FILE_DATA:
380 case STREAM_MD5_DIGEST:
381 case STREAM_UNIX_ATTRIBUTES_EX:
382 case STREAM_SPARSE_DATA:
383 case STREAM_PROGRAM_NAMES:
384 case STREAM_PROGRAM_DATA:
385 case STREAM_SHA1_DIGEST:
387 case STREAM_SHA256_DIGEST:
388 case STREAM_SHA512_DIGEST:
391 case STREAM_SIGNED_DIGEST:
392 case STREAM_ENCRYPTED_FILE_DATA:
393 case STREAM_ENCRYPTED_FILE_GZIP_DATA:
394 case STREAM_ENCRYPTED_WIN32_DATA:
395 case STREAM_ENCRYPTED_WIN32_GZIP_DATA:
397 case 0: /* compatibility with old tapes */
403 HANDLE bget_handle(BFILE *bfd)
408 int bopen(BFILE *bfd, const char *fname, int flags, mode_t mode)
410 POOLMEM *win32_fname;
411 POOLMEM *win32_fname_wchar;
413 DWORD dwaccess, dwflags, dwshare;
415 /* Convert to Windows path format */
416 win32_fname = get_pool_memory(PM_FNAME);
417 win32_fname_wchar = get_pool_memory(PM_FNAME);
419 unix_name_to_win32(&win32_fname, (char *)fname);
421 if (bfd->cmd_plugin && plugin_bopen) {
423 Dmsg1(000, "call plugin_bopen fname=%s\n", fname);
424 rtnstat = plugin_bopen(bfd, fname, flags, mode);
426 if (flags & O_CREAT || flags & O_WRONLY) { /* Open existing for write */
427 bfd->mode = BF_WRITE;
432 bfd->mode = BF_CLOSED;
434 free_pool_memory(win32_fname_wchar);
435 free_pool_memory(win32_fname);
436 return bfd->mode == BF_CLOSED ? -1 : 1;
439 if (!(p_CreateFileA || p_CreateFileW))
442 if (p_CreateFileW && p_MultiByteToWideChar)
443 make_win32_path_UTF8_2_wchar(&win32_fname_wchar, fname);
445 if (flags & O_CREAT) { /* Create */
446 if (bfd->use_backup_api) {
447 dwaccess = GENERIC_WRITE|FILE_ALL_ACCESS|WRITE_OWNER|WRITE_DAC|ACCESS_SYSTEM_SECURITY;
448 dwflags = FILE_FLAG_BACKUP_SEMANTICS;
450 dwaccess = GENERIC_WRITE;
454 if (p_CreateFileW && p_MultiByteToWideChar) {
455 // unicode open for create write
456 bfd->fh = p_CreateFileW((LPCWSTR)win32_fname_wchar,
457 dwaccess, /* Requested access */
459 NULL, /* SecurityAttributes */
460 CREATE_ALWAYS, /* CreationDisposition */
461 dwflags, /* Flags and attributes */
462 NULL); /* TemplateFile */
465 bfd->fh = p_CreateFileA(win32_fname,
466 dwaccess, /* Requested access */
468 NULL, /* SecurityAttributes */
469 CREATE_ALWAYS, /* CreationDisposition */
470 dwflags, /* Flags and attributes */
471 NULL); /* TemplateFile */
474 bfd->mode = BF_WRITE;
476 } else if (flags & O_WRONLY) { /* Open existing for write */
477 if (bfd->use_backup_api) {
478 dwaccess = GENERIC_WRITE|WRITE_OWNER|WRITE_DAC;
479 dwflags = FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT;
481 dwaccess = GENERIC_WRITE;
485 if (p_CreateFileW && p_MultiByteToWideChar) {
486 // unicode open for open existing write
487 bfd->fh = p_CreateFileW((LPCWSTR)win32_fname_wchar,
488 dwaccess, /* Requested access */
490 NULL, /* SecurityAttributes */
491 OPEN_EXISTING, /* CreationDisposition */
492 dwflags, /* Flags and attributes */
493 NULL); /* TemplateFile */
496 bfd->fh = p_CreateFileA(win32_fname,
497 dwaccess, /* Requested access */
499 NULL, /* SecurityAttributes */
500 OPEN_EXISTING, /* CreationDisposition */
501 dwflags, /* Flags and attributes */
502 NULL); /* TemplateFile */
506 bfd->mode = BF_WRITE;
509 if (bfd->use_backup_api) {
510 dwaccess = GENERIC_READ|READ_CONTROL|ACCESS_SYSTEM_SECURITY;
511 dwflags = FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_SEQUENTIAL_SCAN |
512 FILE_FLAG_OPEN_REPARSE_POINT;
513 dwshare = FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE;
515 dwaccess = GENERIC_READ;
517 dwshare = FILE_SHARE_READ|FILE_SHARE_WRITE;
520 if (p_CreateFileW && p_MultiByteToWideChar) {
521 // unicode open for open existing read
522 bfd->fh = p_CreateFileW((LPCWSTR)win32_fname_wchar,
523 dwaccess, /* Requested access */
524 dwshare, /* Share modes */
525 NULL, /* SecurityAttributes */
526 OPEN_EXISTING, /* CreationDisposition */
527 dwflags, /* Flags and attributes */
528 NULL); /* TemplateFile */
531 bfd->fh = p_CreateFileA(win32_fname,
532 dwaccess, /* Requested access */
533 dwshare, /* Share modes */
534 NULL, /* SecurityAttributes */
535 OPEN_EXISTING, /* CreationDisposition */
536 dwflags, /* Flags and attributes */
537 NULL); /* TemplateFile */
543 if (bfd->fh == INVALID_HANDLE_VALUE) {
544 bfd->lerror = GetLastError();
545 bfd->berrno = b_errno_win32;
546 errno = b_errno_win32;
547 bfd->mode = BF_CLOSED;
550 bfd->lpContext = NULL;
551 bfd->win32DecompContext.bIsInData = false;
552 bfd->win32DecompContext.liNextHeader = 0;
553 free_pool_memory(win32_fname_wchar);
554 free_pool_memory(win32_fname);
555 return bfd->mode == BF_CLOSED ? -1 : 1;
559 * Returns 0 on success
562 int bclose(BFILE *bfd)
567 free_pool_memory(bfd->errmsg);
570 if (bfd->mode == BF_CLOSED) {
574 if (bfd->cmd_plugin && plugin_bclose) {
575 stat = plugin_bclose(bfd);
580 * We need to tell the API to release the buffer it
581 * allocated in lpContext. We do so by calling the
582 * API one more time, but with the Abort bit set.
584 if (bfd->use_backup_api && bfd->mode == BF_READ) {
586 if (bfd->lpContext && !p_BackupRead(bfd->fh,
588 (DWORD)0, /* bytes to read */
589 &bfd->rw_bytes, /* bytes read */
591 1, /* ProcessSecurity */
592 &bfd->lpContext)) { /* Read context */
593 errno = b_errno_win32;
596 } else if (bfd->use_backup_api && bfd->mode == BF_WRITE) {
598 if (bfd->lpContext && !p_BackupWrite(bfd->fh,
600 (DWORD)0, /* bytes to read */
601 &bfd->rw_bytes, /* bytes written */
603 1, /* ProcessSecurity */
604 &bfd->lpContext)) { /* Write context */
605 errno = b_errno_win32;
609 if (!CloseHandle(bfd->fh)) {
611 errno = b_errno_win32;
615 bfd->mode = BF_CLOSED;
616 bfd->lpContext = NULL;
617 bfd->cmd_plugin = false;
621 /* Returns: bytes read on success
625 ssize_t bread(BFILE *bfd, void *buf, size_t count)
629 if (bfd->cmd_plugin && plugin_bread) {
630 return plugin_bread(bfd, buf, count);
633 if (bfd->use_backup_api) {
634 if (!p_BackupRead(bfd->fh,
639 1, /* Process Security */
640 &bfd->lpContext)) { /* Context */
641 bfd->lerror = GetLastError();
642 bfd->berrno = b_errno_win32;
643 errno = b_errno_win32;
647 if (!ReadFile(bfd->fh,
652 bfd->lerror = GetLastError();
653 bfd->berrno = b_errno_win32;
654 errno = b_errno_win32;
659 return (ssize_t)bfd->rw_bytes;
662 ssize_t bwrite(BFILE *bfd, void *buf, size_t count)
666 if (bfd->cmd_plugin && plugin_bwrite) {
667 return plugin_bwrite(bfd, buf, count);
670 if (bfd->use_backup_api) {
671 if (!p_BackupWrite(bfd->fh,
676 1, /* Process Security */
677 &bfd->lpContext)) { /* Context */
678 bfd->lerror = GetLastError();
679 bfd->berrno = b_errno_win32;
680 errno = b_errno_win32;
684 if (!WriteFile(bfd->fh,
689 bfd->lerror = GetLastError();
690 bfd->berrno = b_errno_win32;
691 errno = b_errno_win32;
695 return (ssize_t)bfd->rw_bytes;
698 bool is_bopen(BFILE *bfd)
700 return bfd->mode != BF_CLOSED;
703 boffset_t blseek(BFILE *bfd, boffset_t offset, int whence)
705 LONG offset_low = (LONG)offset;
706 LONG offset_high = (LONG)(offset >> 32);
709 if (bfd->cmd_plugin && plugin_bwrite) {
710 return plugin_blseek(bfd, offset, whence);
713 dwResult = SetFilePointer(bfd->fh, offset_low, &offset_high, whence);
715 if (dwResult == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
716 return (boffset_t)-1;
719 return ((boffset_t)offset_high << 32) | dwResult;
722 #else /* Unix systems */
724 /* ===============================================================
728 * ===============================================================
730 void binit(BFILE *bfd)
732 memset(bfd, 0, sizeof(BFILE));
736 bool have_win32_api()
738 return false; /* no can do */
742 * Enables using the Backup API (win32_data).
743 * Returns true if function worked
744 * Returns false if failed (i.e. do not have Backup API on this machine)
746 bool set_win32_backup(BFILE *bfd)
748 return false; /* no can do */
752 bool set_portable_backup(BFILE *bfd)
754 return true; /* no problem */
758 * Return true if we are writing in portable format
759 * return false if not
761 bool is_portable_backup(BFILE *bfd)
763 return true; /* portable by definition */
766 bool set_prog(BFILE *bfd, char *prog, JCR *jcr)
771 bool set_cmd_plugin(BFILE *bfd, JCR *jcr)
773 bfd->cmd_plugin = true;
779 * This code is running on a non-Win32 machine
781 bool is_restore_stream_supported(int stream)
783 /* No Win32 backup on this machine */
786 case STREAM_GZIP_DATA:
787 case STREAM_SPARSE_GZIP_DATA:
788 case STREAM_WIN32_GZIP_DATA:
790 #ifndef HAVE_DARWIN_OS
791 case STREAM_MACOS_FORK_DATA:
792 case STREAM_HFSPLUS_ATTRIBUTES:
798 case STREAM_GZIP_DATA:
799 case STREAM_SPARSE_GZIP_DATA:
800 case STREAM_WIN32_GZIP_DATA:
802 case STREAM_WIN32_DATA:
803 case STREAM_UNIX_ATTRIBUTES:
804 case STREAM_FILE_DATA:
805 case STREAM_MD5_DIGEST:
806 case STREAM_UNIX_ATTRIBUTES_EX:
807 case STREAM_SPARSE_DATA:
808 case STREAM_PROGRAM_NAMES:
809 case STREAM_PROGRAM_DATA:
810 case STREAM_SHA1_DIGEST:
812 case STREAM_SHA256_DIGEST:
813 case STREAM_SHA512_DIGEST:
816 case STREAM_SIGNED_DIGEST:
817 case STREAM_ENCRYPTED_FILE_DATA:
818 case STREAM_ENCRYPTED_FILE_GZIP_DATA:
819 case STREAM_ENCRYPTED_WIN32_DATA:
820 case STREAM_ENCRYPTED_WIN32_GZIP_DATA:
822 #ifdef HAVE_DARWIN_OS
823 case STREAM_MACOS_FORK_DATA:
824 case STREAM_HFSPLUS_ATTRIBUTES:
826 case STREAM_ENCRYPTED_MACOS_FORK_DATA:
827 #endif /* HAVE_CRYPTO */
828 #endif /* HAVE_DARWIN_OS */
829 case 0: /* compatibility with old tapes */
836 int bopen(BFILE *bfd, const char *fname, int flags, mode_t mode)
838 if (bfd->cmd_plugin && plugin_bopen) {
839 Dmsg1(000, "call plugin_bopen fname=%s\n", fname);
840 return plugin_bopen(bfd, fname, flags, mode);
843 /* Normal file open */
844 Dmsg1(dbglvl, "open file %s\n", fname);
846 /* We use fnctl to set O_NOATIME if requested to avoid open error */
847 bfd->fid = open(fname, flags & ~O_NOATIME, mode);
849 /* Set O_NOATIME if possible */
850 if (bfd->fid != -1 && flags & O_NOATIME) {
851 int oldflags = fcntl(bfd->fid, F_GETFL, 0);
852 if (oldflags == -1) {
857 int ret = fcntl(bfd->fid, F_SETFL, oldflags | O_NOATIME);
858 /* EPERM means setting O_NOATIME was not allowed */
859 if (ret == -1 && errno != EPERM) {
867 bfd->m_flags = flags;
868 Dmsg1(400, "Open file %d\n", bfd->fid);
871 bfd->win32DecompContext.bIsInData = false;
872 bfd->win32DecompContext.liNextHeader = 0;
874 #if defined(HAVE_POSIX_FADVISE) && defined(POSIX_FADV_WILLNEED)
875 if (bfd->fid != -1 && flags & O_RDONLY) {
876 int stat = posix_fadvise(bfd->fid, 0, 0, POSIX_FADV_WILLNEED);
877 Dmsg2(400, "Did posix_fadvise on %s stat=%d\n", fname, stat);
884 #ifdef HAVE_DARWIN_OS
885 /* Open the resource fork of a file. */
886 int bopen_rsrc(BFILE *bfd, const char *fname, int flags, mode_t mode)
890 rsrc_fname = get_pool_memory(PM_FNAME);
891 pm_strcpy(rsrc_fname, fname);
892 pm_strcat(rsrc_fname, _PATH_RSRCFORKSPEC);
893 bopen(bfd, rsrc_fname, flags, mode);
894 free_pool_memory(rsrc_fname);
900 int bclose(BFILE *bfd)
904 Dmsg1(400, "Close file %d\n", bfd->fid);
906 if (bfd->cmd_plugin && plugin_bclose) {
907 stat = plugin_bclose(bfd);
909 bfd->cmd_plugin = false;
912 if (bfd->fid == -1) {
915 #if defined(HAVE_POSIX_FADVISE) && defined(POSIX_FADV_DONTNEED)
916 if (bfd->m_flags & O_RDONLY) {
917 fdatasync(bfd->fid); /* sync the file */
918 /* Tell OS we don't need it any more */
919 posix_fadvise(bfd->fid, 0, 0, POSIX_FADV_DONTNEED);
923 /* Close normal file */
924 stat = close(bfd->fid);
927 bfd->cmd_plugin = false;
931 ssize_t bread(BFILE *bfd, void *buf, size_t count)
935 if (bfd->cmd_plugin && plugin_bread) {
936 return plugin_bread(bfd, buf, count);
939 stat = read(bfd->fid, buf, count);
944 ssize_t bwrite(BFILE *bfd, void *buf, size_t count)
948 if (bfd->cmd_plugin && plugin_bwrite) {
949 return plugin_bwrite(bfd, buf, count);
951 stat = write(bfd->fid, buf, count);
956 bool is_bopen(BFILE *bfd)
958 return bfd->fid >= 0;
961 boffset_t blseek(BFILE *bfd, boffset_t offset, int whence)
965 if (bfd->cmd_plugin && plugin_bwrite) {
966 return plugin_blseek(bfd, offset, whence);
968 pos = (boffset_t)lseek(bfd->fid, offset, whence);