2 Unix SMB/CIFS implementation.
3 dos mode handling functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) James Peach 2006
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "librpc/gen_ndr/ndr_xattr.h"
24 static uint32_t filter_mode_by_protocol(uint32_t mode)
26 if (get_Protocol() <= PROTOCOL_LANMAN2) {
27 DEBUG(10,("filter_mode_by_protocol: "
28 "filtering result 0x%x to 0x%x\n",
30 (unsigned int)(mode & 0x3f) ));
36 static int set_sparse_flag(const SMB_STRUCT_STAT * const sbuf)
38 #if defined (HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
39 if (sbuf->st_ex_size > sbuf->st_ex_blocks * (SMB_OFF_T)STAT_ST_BLOCKSIZE) {
40 return FILE_ATTRIBUTE_SPARSE;
46 static int set_link_read_only_flag(const SMB_STRUCT_STAT *const sbuf)
50 if (S_ISLNK(sbuf->st_mode) && S_ISDIR(sbuf->st_mode))
57 /****************************************************************************
58 Change a dos mode to a unix mode.
59 Base permission for files:
60 if creating file and inheriting (i.e. parent_dir != NULL)
61 apply read/write bits from parent directory.
63 everybody gets read bit set
64 dos readonly is represented in unix by removing everyone's write bit
65 dos archive is represented in unix by the user's execute bit
66 dos system is represented in unix by the group's execute bit
67 dos hidden is represented in unix by the other's execute bit
69 Then apply create mask,
72 Base permission for directories:
73 dos directory is represented in unix by unix's dir bit and the exec bit
75 Then apply create mask,
78 ****************************************************************************/
80 mode_t unix_mode(connection_struct *conn, int dosmode,
81 const struct smb_filename *smb_fname,
82 const char *inherit_from_dir)
84 mode_t result = (S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR | S_IWGRP | S_IWOTH);
85 mode_t dir_mode = 0; /* Mode of the inherit_from directory if
88 if (!lp_store_dos_attributes(SNUM(conn)) && IS_DOS_READONLY(dosmode)) {
89 result &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
92 if ((inherit_from_dir != NULL) && lp_inherit_perms(SNUM(conn))) {
93 struct smb_filename *smb_fname_parent = NULL;
96 DEBUG(2, ("unix_mode(%s) inheriting from %s\n",
97 smb_fname_str_dbg(smb_fname),
100 status = create_synthetic_smb_fname(talloc_tos(),
101 inherit_from_dir, NULL,
102 NULL, &smb_fname_parent);
103 if (!NT_STATUS_IS_OK(status)) {
104 DEBUG(1,("unix_mode(%s) failed, [dir %s]: %s\n",
105 smb_fname_str_dbg(smb_fname),
106 inherit_from_dir, nt_errstr(status)));
110 if (SMB_VFS_STAT(conn, smb_fname_parent) != 0) {
111 DEBUG(4,("unix_mode(%s) failed, [dir %s]: %s\n",
112 smb_fname_str_dbg(smb_fname),
113 inherit_from_dir, strerror(errno)));
114 TALLOC_FREE(smb_fname_parent);
115 return(0); /* *** shouldn't happen! *** */
118 /* Save for later - but explicitly remove setuid bit for safety. */
119 dir_mode = smb_fname_parent->st.st_ex_mode & ~S_ISUID;
120 DEBUG(2,("unix_mode(%s) inherit mode %o\n",
121 smb_fname_str_dbg(smb_fname), (int)dir_mode));
124 TALLOC_FREE(smb_fname_parent);
127 if (IS_DOS_DIR(dosmode)) {
128 /* We never make directories read only for the owner as under DOS a user
129 can always create a file in a read-only directory. */
130 result |= (S_IFDIR | S_IWUSR);
133 /* Inherit mode of parent directory. */
136 /* Provisionally add all 'x' bits */
137 result |= (S_IXUSR | S_IXGRP | S_IXOTH);
139 /* Apply directory mask */
140 result &= lp_dir_mask(SNUM(conn));
141 /* Add in force bits */
142 result |= lp_force_dir_mode(SNUM(conn));
145 if (lp_map_archive(SNUM(conn)) && IS_DOS_ARCHIVE(dosmode))
148 if (lp_map_system(SNUM(conn)) && IS_DOS_SYSTEM(dosmode))
151 if (lp_map_hidden(SNUM(conn)) && IS_DOS_HIDDEN(dosmode))
155 /* Inherit 666 component of parent directory mode */
156 result |= dir_mode & (S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR | S_IWGRP | S_IWOTH);
158 /* Apply mode mask */
159 result &= lp_create_mask(SNUM(conn));
160 /* Add in force bits */
161 result |= lp_force_create_mode(SNUM(conn));
165 DEBUG(3,("unix_mode(%s) returning 0%o\n", smb_fname_str_dbg(smb_fname),
170 /****************************************************************************
171 Change a unix mode to a dos mode.
172 ****************************************************************************/
174 static uint32 dos_mode_from_sbuf(connection_struct *conn,
175 const struct smb_filename *smb_fname)
178 enum mapreadonly_options ro_opts = (enum mapreadonly_options)lp_map_readonly(SNUM(conn));
180 if (ro_opts == MAP_READONLY_YES) {
181 /* Original Samba method - map inverse of user "w" bit. */
182 if ((smb_fname->st.st_ex_mode & S_IWUSR) == 0) {
185 } else if (ro_opts == MAP_READONLY_PERMISSIONS) {
186 /* Check actual permissions for read-only. */
187 if (!can_write_to_file(conn, smb_fname)) {
190 } /* Else never set the readonly bit. */
192 if (MAP_ARCHIVE(conn) && ((smb_fname->st.st_ex_mode & S_IXUSR) != 0))
195 if (MAP_SYSTEM(conn) && ((smb_fname->st.st_ex_mode & S_IXGRP) != 0))
198 if (MAP_HIDDEN(conn) && ((smb_fname->st.st_ex_mode & S_IXOTH) != 0))
201 if (S_ISDIR(smb_fname->st.st_ex_mode))
202 result = aDIR | (result & aRONLY);
204 result |= set_sparse_flag(&smb_fname->st);
205 result |= set_link_read_only_flag(&smb_fname->st);
207 DEBUG(8,("dos_mode_from_sbuf returning "));
209 if (result & aHIDDEN) DEBUG(8, ("h"));
210 if (result & aRONLY ) DEBUG(8, ("r"));
211 if (result & aSYSTEM) DEBUG(8, ("s"));
212 if (result & aDIR ) DEBUG(8, ("d"));
213 if (result & aARCH ) DEBUG(8, ("a"));
219 /****************************************************************************
220 Get DOS attributes from an EA.
221 This can also pull the create time into the stat struct inside smb_fname.
222 ****************************************************************************/
224 static bool get_ea_dos_attribute(connection_struct *conn,
225 struct smb_filename *smb_fname,
228 struct xattr_DOSATTRIB dosattrib;
229 enum ndr_err_code ndr_err;
235 if (!lp_store_dos_attributes(SNUM(conn))) {
239 /* Don't reset pattr to zero as we may already have filename-based attributes we
242 sizeret = SMB_VFS_GETXATTR(conn, smb_fname->base_name,
243 SAMBA_XATTR_DOS_ATTRIB, attrstr,
248 || errno == ENOTSUP) {
252 DEBUG(1,("get_ea_dos_attributes: Cannot get attribute "
253 "from EA on file %s: Error = %s\n",
254 smb_fname_str_dbg(smb_fname),
256 set_store_dos_attributes(SNUM(conn), False);
261 blob.data = (uint8_t *)attrstr;
262 blob.length = sizeret;
264 ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), NULL, &dosattrib,
265 (ndr_pull_flags_fn_t)ndr_pull_xattr_DOSATTRIB);
267 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
268 DEBUG(1,("get_ea_dos_attributes: bad ndr decode "
269 "from EA on file %s: Error = %s\n",
270 smb_fname_str_dbg(smb_fname),
271 ndr_errstr(ndr_err)));
275 DEBUG(10,("get_ea_dos_attribute: %s attr = %s\n",
276 smb_fname_str_dbg(smb_fname), dosattrib.attrib_hex));
278 switch (dosattrib.version) {
280 dosattr = dosattrib.info.compatinfoFFFF.attrib;
283 dosattr = dosattrib.info.info1.attrib;
284 if (!null_nttime(dosattrib.info.info1.create_time)) {
285 struct timespec create_time =
286 nt_time_to_unix_timespec(
287 &dosattrib.info.info1.create_time);
289 update_stat_ex_create_time(&smb_fname->st,
292 DEBUG(10,("get_ea_dos_attributes: file %s case 1 "
294 smb_fname_str_dbg(smb_fname),
295 time_to_asc(convert_timespec_to_time_t(
300 dosattr = dosattrib.info.oldinfo2.attrib;
301 /* Don't know what flags to check for this case. */
304 dosattr = dosattrib.info.info3.attrib;
305 if ((dosattrib.info.info3.valid_flags & XATTR_DOSINFO_CREATE_TIME) &&
306 !null_nttime(dosattrib.info.info3.create_time)) {
307 struct timespec create_time =
308 nt_time_to_unix_timespec(
309 &dosattrib.info.info3.create_time);
311 update_stat_ex_create_time(&smb_fname->st,
314 DEBUG(10,("get_ea_dos_attributes: file %s case 3 "
316 smb_fname_str_dbg(smb_fname),
317 time_to_asc(convert_timespec_to_time_t(
322 DEBUG(1,("get_ea_dos_attributes: Badly formed DOSATTRIB on "
323 "file %s - %s\n", smb_fname_str_dbg(smb_fname),
328 if (S_ISDIR(smb_fname->st.st_ex_mode)) {
331 *pattr = (uint32)(dosattr & SAMBA_ATTRIBUTES_MASK);
333 DEBUG(8,("get_ea_dos_attribute returning (0x%x)", dosattr));
335 if (dosattr & aHIDDEN) DEBUG(8, ("h"));
336 if (dosattr & aRONLY ) DEBUG(8, ("r"));
337 if (dosattr & aSYSTEM) DEBUG(8, ("s"));
338 if (dosattr & aDIR ) DEBUG(8, ("d"));
339 if (dosattr & aARCH ) DEBUG(8, ("a"));
346 /****************************************************************************
347 Set DOS attributes in an EA.
348 Also sets the create time.
349 ****************************************************************************/
351 static bool set_ea_dos_attribute(connection_struct *conn,
352 struct smb_filename *smb_fname,
355 struct xattr_DOSATTRIB dosattrib;
356 enum ndr_err_code ndr_err;
358 files_struct *fsp = NULL;
361 if (!lp_store_dos_attributes(SNUM(conn))) {
365 ZERO_STRUCT(dosattrib);
368 dosattrib.version = 3;
369 dosattrib.info.info3.valid_flags = XATTR_DOSINFO_ATTRIB|
370 XATTR_DOSINFO_CREATE_TIME;
371 dosattrib.info.info3.attrib = dosmode;
372 unix_timespec_to_nt_time(&dosattrib.info.info3.create_time,
373 smb_fname->st.st_ex_btime);
375 ndr_err = ndr_push_struct_blob(
376 &blob, talloc_tos(), NULL, &dosattrib,
377 (ndr_push_flags_fn_t)ndr_push_xattr_DOSATTRIB);
379 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
380 DEBUG(5, ("create_acl_blob: ndr_push_xattr_DOSATTRIB failed: %s\n",
381 ndr_errstr(ndr_err)));
385 if (blob.data == NULL || blob.length == 0) {
389 if (SMB_VFS_SETXATTR(conn, smb_fname->base_name,
390 SAMBA_XATTR_DOS_ATTRIB, blob.data, blob.length,
392 if((errno != EPERM) && (errno != EACCES)) {
395 || errno == ENOTSUP) {
399 DEBUG(1,("set_ea_dos_attributes: Cannot set "
400 "attribute EA on file %s: Error = %s\n",
401 smb_fname_str_dbg(smb_fname),
403 set_store_dos_attributes(SNUM(conn), False);
408 /* We want DOS semantics, ie allow non owner with write permission to change the
409 bits on a file. Just like file_ntimes below.
412 /* Check if we have write access. */
413 if(!CAN_WRITE(conn) || !lp_dos_filemode(SNUM(conn)))
417 * We need to open the file with write access whilst
418 * still in our current user context. This ensures we
419 * are not violating security in doing the setxattr.
422 if (!NT_STATUS_IS_OK(open_file_fchmod(NULL, conn, smb_fname,
426 if (SMB_VFS_SETXATTR(conn, smb_fname->base_name,
427 SAMBA_XATTR_DOS_ATTRIB, blob.data,
428 blob.length, 0) == 0) {
432 close_file_fchmod(NULL, fsp);
435 DEBUG(10,("set_ea_dos_attribute: set EA 0x%x on file %s\n",
436 (unsigned int)dosmode,
437 smb_fname_str_dbg(smb_fname)));
441 /****************************************************************************
442 Change a unix mode to a dos mode for an ms dfs link.
443 ****************************************************************************/
445 uint32 dos_mode_msdfs(connection_struct *conn,
446 const struct smb_filename *smb_fname)
450 DEBUG(8,("dos_mode_msdfs: %s\n", smb_fname_str_dbg(smb_fname)));
452 if (!VALID_STAT(smb_fname->st)) {
456 /* First do any modifications that depend on the path name. */
457 /* hide files with a name starting with a . */
458 if (lp_hide_dot_files(SNUM(conn))) {
459 const char *p = strrchr_m(smb_fname->base_name, '/');
463 p = smb_fname->base_name;
466 /* Only . and .. are not hidden. */
467 if (p[0] == '.' && !((p[1] == '\0') ||
468 (p[1] == '.' && p[2] == '\0'))) {
473 result |= dos_mode_from_sbuf(conn, smb_fname);
475 /* Optimization : Only call is_hidden_path if it's not already
477 if (!(result & aHIDDEN) &&
478 IS_HIDDEN_PATH(conn, smb_fname->base_name)) {
483 result = FILE_ATTRIBUTE_NORMAL;
486 result = filter_mode_by_protocol(result);
488 DEBUG(8,("dos_mode_msdfs returning "));
490 if (result & aHIDDEN) DEBUG(8, ("h"));
491 if (result & aRONLY ) DEBUG(8, ("r"));
492 if (result & aSYSTEM) DEBUG(8, ("s"));
493 if (result & aDIR ) DEBUG(8, ("d"));
494 if (result & aARCH ) DEBUG(8, ("a"));
495 if (result & FILE_ATTRIBUTE_SPARSE ) DEBUG(8, ("[sparse]"));
502 #ifdef HAVE_STAT_DOS_FLAGS
503 /****************************************************************************
504 Convert dos attributes (FILE_ATTRIBUTE_*) to dos stat flags (UF_*)
505 ****************************************************************************/
507 int dos_attributes_to_stat_dos_flags(uint32_t dosmode)
509 uint32_t dos_stat_flags = 0;
512 dos_stat_flags |= UF_DOS_ARCHIVE;
513 if (dosmode & aHIDDEN)
514 dos_stat_flags |= UF_DOS_HIDDEN;
515 if (dosmode & aRONLY)
516 dos_stat_flags |= UF_DOS_RO;
517 if (dosmode & aSYSTEM)
518 dos_stat_flags |= UF_DOS_SYSTEM;
519 if (dosmode & FILE_ATTRIBUTE_NONINDEXED)
520 dos_stat_flags |= UF_DOS_NOINDEX;
522 return dos_stat_flags;
525 /****************************************************************************
526 Gets DOS attributes, accessed via st_ex_flags in the stat struct.
527 ****************************************************************************/
529 static bool get_stat_dos_flags(connection_struct *conn,
530 const struct smb_filename *smb_fname,
533 SMB_ASSERT(VALID_STAT(smb_fname->st));
536 if (!lp_store_dos_attributes(SNUM(conn))) {
540 DEBUG(5, ("Getting stat dos attributes for %s.\n",
541 smb_fname_str_dbg(smb_fname)));
543 if (smb_fname->st.st_ex_flags & UF_DOS_ARCHIVE)
545 if (smb_fname->st.st_ex_flags & UF_DOS_HIDDEN)
547 if (smb_fname->st.st_ex_flags & UF_DOS_RO)
549 if (smb_fname->st.st_ex_flags & UF_DOS_SYSTEM)
551 if (smb_fname->st.st_ex_flags & UF_DOS_NOINDEX)
552 *dosmode |= FILE_ATTRIBUTE_NONINDEXED;
553 if (S_ISDIR(smb_fname->st.st_ex_mode))
556 *dosmode |= set_sparse_flag(&smb_fname->st);
557 *dosmode |= set_link_read_only_flag(&smb_fname->st);
562 /****************************************************************************
563 Sets DOS attributes, stored in st_ex_flags of the inode.
564 ****************************************************************************/
566 static bool set_stat_dos_flags(connection_struct *conn,
567 const struct smb_filename *smb_fname,
569 bool *attributes_changed)
571 uint32_t new_flags = 0;
574 SMB_ASSERT(VALID_STAT(smb_fname->st));
575 SMB_ASSERT(attributes_changed);
577 *attributes_changed = false;
579 if (!lp_store_dos_attributes(SNUM(conn))) {
583 DEBUG(5, ("Setting stat dos attributes for %s.\n",
584 smb_fname_str_dbg(smb_fname)));
586 new_flags = (smb_fname->st.st_ex_flags & ~UF_DOS_FLAGS) |
587 dos_attributes_to_stat_dos_flags(dosmode);
589 /* Return early if no flags changed. */
590 if (new_flags == smb_fname->st.st_ex_flags)
593 DEBUG(5, ("Setting stat dos attributes=0x%x, prev=0x%x\n", new_flags,
594 smb_fname->st.st_ex_flags));
596 /* Set new flags with chflags. */
597 error = SMB_VFS_CHFLAGS(conn, smb_fname->base_name, new_flags);
599 DEBUG(0, ("Failed setting new stat dos attributes (0x%x) on "
600 "file %s! errno=%d\n", new_flags,
601 smb_fname_str_dbg(smb_fname), errno));
605 *attributes_changed = true;
608 #endif /* HAVE_STAT_DOS_FLAGS */
610 /****************************************************************************
611 Change a unix mode to a dos mode.
612 May also read the create timespec into the stat struct in smb_fname
613 if "store dos attributes" is true.
614 ****************************************************************************/
616 uint32 dos_mode(connection_struct *conn, struct smb_filename *smb_fname)
619 bool offline, used_stat_dos_flags = false;
621 DEBUG(8,("dos_mode: %s\n", smb_fname_str_dbg(smb_fname)));
623 if (!VALID_STAT(smb_fname->st)) {
627 /* First do any modifications that depend on the path name. */
628 /* hide files with a name starting with a . */
629 if (lp_hide_dot_files(SNUM(conn))) {
630 const char *p = strrchr_m(smb_fname->base_name,'/');
634 p = smb_fname->base_name;
637 /* Only . and .. are not hidden. */
638 if (p[0] == '.' && !((p[1] == '\0') ||
639 (p[1] == '.' && p[2] == '\0'))) {
644 #ifdef HAVE_STAT_DOS_FLAGS
645 used_stat_dos_flags = get_stat_dos_flags(conn, smb_fname, &result);
647 if (!used_stat_dos_flags) {
648 /* Get the DOS attributes from an EA by preference. */
649 if (get_ea_dos_attribute(conn, smb_fname, &result)) {
650 result |= set_sparse_flag(&smb_fname->st);
652 result |= dos_mode_from_sbuf(conn, smb_fname);
656 offline = SMB_VFS_IS_OFFLINE(conn, smb_fname->base_name, &smb_fname->st);
657 if (S_ISREG(smb_fname->st.st_ex_mode) && offline) {
658 result |= FILE_ATTRIBUTE_OFFLINE;
661 /* Optimization : Only call is_hidden_path if it's not already
663 if (!(result & aHIDDEN) &&
664 IS_HIDDEN_PATH(conn, smb_fname->base_name)) {
669 result = FILE_ATTRIBUTE_NORMAL;
672 result = filter_mode_by_protocol(result);
674 DEBUG(8,("dos_mode returning "));
676 if (result & aHIDDEN) DEBUG(8, ("h"));
677 if (result & aRONLY ) DEBUG(8, ("r"));
678 if (result & aSYSTEM) DEBUG(8, ("s"));
679 if (result & aDIR ) DEBUG(8, ("d"));
680 if (result & aARCH ) DEBUG(8, ("a"));
681 if (result & FILE_ATTRIBUTE_SPARSE ) DEBUG(8, ("[sparse]"));
688 /*******************************************************************
689 chmod a file - but preserve some bits.
690 If "store dos attributes" is also set it will store the create time
691 from the stat struct in smb_fname (in NTTIME format) in the EA
693 ********************************************************************/
695 int file_set_dosmode(connection_struct *conn, struct smb_filename *smb_fname,
696 uint32 dosmode, const char *parent_dir, bool newfile)
701 int ret = -1, lret = -1;
703 struct timespec new_create_timespec;
705 /* We only allow READONLY|HIDDEN|SYSTEM|DIRECTORY|ARCHIVE here. */
706 dosmode &= (SAMBA_ATTRIBUTES_MASK | FILE_ATTRIBUTE_OFFLINE);
708 DEBUG(10,("file_set_dosmode: setting dos mode 0x%x on file %s\n",
709 dosmode, smb_fname_str_dbg(smb_fname)));
711 unixmode = smb_fname->st.st_ex_mode;
713 get_acl_group_bits(conn, smb_fname->base_name,
714 &smb_fname->st.st_ex_mode);
716 if (S_ISDIR(smb_fname->st.st_ex_mode))
721 new_create_timespec = smb_fname->st.st_ex_btime;
723 old_mode = dos_mode(conn, smb_fname);
725 if (dosmode & FILE_ATTRIBUTE_OFFLINE) {
726 if (!(old_mode & FILE_ATTRIBUTE_OFFLINE)) {
727 lret = SMB_VFS_SET_OFFLINE(conn, smb_fname->base_name);
729 DEBUG(0, ("set_dos_mode: client has asked to "
730 "set FILE_ATTRIBUTE_OFFLINE to "
731 "%s/%s but there was an error while "
732 "setting it or it is not "
733 "supported.\n", parent_dir,
734 smb_fname_str_dbg(smb_fname)));
739 dosmode &= ~FILE_ATTRIBUTE_OFFLINE;
740 old_mode &= ~FILE_ATTRIBUTE_OFFLINE;
742 smb_fname->st.st_ex_btime = new_create_timespec;
744 #ifdef HAVE_STAT_DOS_FLAGS
746 bool attributes_changed;
748 if (set_stat_dos_flags(conn, smb_fname, dosmode,
749 &attributes_changed))
751 if (!newfile && attributes_changed) {
752 notify_fname(conn, NOTIFY_ACTION_MODIFIED,
753 FILE_NOTIFY_CHANGE_ATTRIBUTES,
754 smb_fname->base_name);
756 smb_fname->st.st_ex_mode = unixmode;
761 /* Store the DOS attributes in an EA by preference. */
762 if (set_ea_dos_attribute(conn, smb_fname, dosmode)) {
764 notify_fname(conn, NOTIFY_ACTION_MODIFIED,
765 FILE_NOTIFY_CHANGE_ATTRIBUTES,
766 smb_fname->base_name);
768 smb_fname->st.st_ex_mode = unixmode;
772 unixmode = unix_mode(conn, dosmode, smb_fname, parent_dir);
774 /* preserve the s bits */
775 mask |= (S_ISUID | S_ISGID);
777 /* preserve the t bit */
782 /* possibly preserve the x bits */
783 if (!MAP_ARCHIVE(conn))
785 if (!MAP_SYSTEM(conn))
787 if (!MAP_HIDDEN(conn))
790 unixmode |= (smb_fname->st.st_ex_mode & mask);
792 /* if we previously had any r bits set then leave them alone */
793 if ((tmp = smb_fname->st.st_ex_mode & (S_IRUSR|S_IRGRP|S_IROTH))) {
794 unixmode &= ~(S_IRUSR|S_IRGRP|S_IROTH);
798 /* if we previously had any w bits set then leave them alone
799 whilst adding in the new w bits, if the new mode is not rdonly */
800 if (!IS_DOS_READONLY(dosmode)) {
801 unixmode |= (smb_fname->st.st_ex_mode & (S_IWUSR|S_IWGRP|S_IWOTH));
804 ret = SMB_VFS_CHMOD(conn, smb_fname->base_name, unixmode);
806 if(!newfile || (lret != -1)) {
807 notify_fname(conn, NOTIFY_ACTION_MODIFIED,
808 FILE_NOTIFY_CHANGE_ATTRIBUTES,
809 smb_fname->base_name);
811 smb_fname->st.st_ex_mode = unixmode;
815 if((errno != EPERM) && (errno != EACCES))
818 if(!lp_dos_filemode(SNUM(conn)))
821 /* We want DOS semantics, ie allow non owner with write permission to change the
822 bits on a file. Just like file_ntimes below.
825 /* Check if we have write access. */
826 if (CAN_WRITE(conn)) {
828 * We need to open the file with write access whilst
829 * still in our current user context. This ensures we
830 * are not violating security in doing the fchmod.
831 * This file open does *not* break any oplocks we are
832 * holding. We need to review this.... may need to
833 * break batch oplocks open by others. JRA.
836 if (!NT_STATUS_IS_OK(open_file_fchmod(NULL, conn, smb_fname,
840 ret = SMB_VFS_FCHMOD(fsp, unixmode);
842 close_file_fchmod(NULL, fsp);
844 notify_fname(conn, NOTIFY_ACTION_MODIFIED,
845 FILE_NOTIFY_CHANGE_ATTRIBUTES,
846 smb_fname->base_name);
849 smb_fname->st.st_ex_mode = unixmode;
856 /*******************************************************************
857 Wrapper around the VFS ntimes that possibly allows DOS semantics rather
859 *******************************************************************/
861 int file_ntimes(connection_struct *conn, const struct smb_filename *smb_fname,
862 struct smb_file_time *ft)
868 DEBUG(6, ("file_ntime: actime: %s",
869 time_to_asc(convert_timespec_to_time_t(ft->atime))));
870 DEBUG(6, ("file_ntime: modtime: %s",
871 time_to_asc(convert_timespec_to_time_t(ft->mtime))));
872 DEBUG(6, ("file_ntime: ctime: %s",
873 time_to_asc(convert_timespec_to_time_t(ft->ctime))));
874 DEBUG(6, ("file_ntime: createtime: %s",
875 time_to_asc(convert_timespec_to_time_t(ft->create_time))));
877 /* Don't update the time on read-only shares */
878 /* We need this as set_filetime (which can be called on
879 close and other paths) can end up calling this function
880 without the NEED_WRITE protection. Found by :
881 Leo Weppelman <leo@wau.mis.ah.nl>
884 if (!CAN_WRITE(conn)) {
888 if(SMB_VFS_NTIMES(conn, smb_fname, ft) == 0) {
892 if((errno != EPERM) && (errno != EACCES)) {
896 if(!lp_dos_filetimes(SNUM(conn))) {
900 /* We have permission (given by the Samba admin) to
901 break POSIX semantics and allow a user to change
902 the time on a file they don't own but can write to
906 /* Check if we have write access. */
907 if (can_write_to_file(conn, smb_fname)) {
908 /* We are allowed to become root and change the filetime. */
910 ret = SMB_VFS_NTIMES(conn, smb_fname, ft);
917 /******************************************************************
918 Force a "sticky" write time on a pathname. This will always be
919 returned on all future write time queries and set on close.
920 ******************************************************************/
922 bool set_sticky_write_time_path(struct file_id fileid, struct timespec mtime)
924 if (null_timespec(mtime)) {
928 if (!set_sticky_write_time(fileid, mtime)) {
935 /******************************************************************
936 Force a "sticky" write time on an fsp. This will always be
937 returned on all future write time queries and set on close.
938 ******************************************************************/
940 bool set_sticky_write_time_fsp(struct files_struct *fsp, struct timespec mtime)
942 if (null_timespec(mtime)) {
946 fsp->write_time_forced = true;
947 TALLOC_FREE(fsp->update_write_time_event);
949 return set_sticky_write_time_path(fsp->file_id, mtime);
952 /******************************************************************
953 Set a create time EA.
954 ******************************************************************/
956 NTSTATUS set_create_timespec_ea(connection_struct *conn,
957 const struct smb_filename *psmb_fname,
958 struct timespec create_time)
961 struct smb_filename *smb_fname = NULL;
965 if (!lp_store_dos_attributes(SNUM(conn))) {
969 status = create_synthetic_smb_fname(talloc_tos(),
970 psmb_fname->base_name,
971 NULL, &psmb_fname->st,
974 if (!NT_STATUS_IS_OK(status)) {
978 dosmode = dos_mode(conn, smb_fname);
980 smb_fname->st.st_ex_btime = create_time;
982 ret = file_set_dosmode(conn, smb_fname, dosmode, NULL, false);
984 map_nt_error_from_unix(errno);
987 DEBUG(10,("set_create_timespec_ea: wrote create time EA for file %s\n",
988 smb_fname_str_dbg(smb_fname)));
993 /******************************************************************
994 Return a create time.
995 ******************************************************************/
997 struct timespec get_create_timespec(connection_struct *conn,
998 struct files_struct *fsp,
999 const struct smb_filename *smb_fname)
1001 return smb_fname->st.st_ex_btime;
1004 /******************************************************************
1005 Return a change time (may look at EA in future).
1006 ******************************************************************/
1008 struct timespec get_change_timespec(connection_struct *conn,
1009 struct files_struct *fsp,
1010 const struct smb_filename *smb_fname)
1012 return smb_fname->st.st_ex_mtime;