--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+ file opening and share modes
+ Copyright (C) Andrew Tridgell 1992-1998
+ Copyright (C) Jeremy Allison 2001-2004
+ Copyright (C) Volker Lendecke 2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+
+extern const struct generic_mapping file_generic_mapping;
+extern bool global_client_failed_oplock_break;
+
+struct deferred_open_record {
+ bool delayed_for_oplocks;
+ struct file_id id;
+};
+
+static NTSTATUS create_file_unixpath(connection_struct *conn,
+ struct smb_request *req,
+ const char *fname,
+ uint32_t access_mask,
+ uint32_t share_access,
+ uint32_t create_disposition,
+ uint32_t create_options,
+ uint32_t file_attributes,
+ uint32_t oplock_request,
+ uint64_t allocation_size,
+ struct security_descriptor *sd,
+ struct ea_list *ea_list,
+
+ files_struct **result,
+ int *pinfo,
+ SMB_STRUCT_STAT *psbuf);
+
+/****************************************************************************
+ Open a file.
+****************************************************************************/
+
+static NTSTATUS open_file(files_struct *fsp,
+ connection_struct *conn,
+ struct smb_request *req,
+ const char *parent_dir,
+ const char *name,
+ const char *path,
+ SMB_STRUCT_STAT *psbuf,
+ int flags,
+ mode_t unx_mode,
+ uint32 access_mask, /* client requested access mask. */
+ uint32 open_access_mask) /* what we're actually using in the open. */
+{
+ NTSTATUS status = NT_STATUS_OK;
+ int accmode = (flags & O_ACCMODE);
+ int local_flags = flags;
+ bool file_existed = VALID_STAT(*psbuf);
+
+ fsp->fh->fd = -1;
+ errno = EPERM;
+
+ /* Check permissions */
+
+ /*
+ * This code was changed after seeing a client open request
+ * containing the open mode of (DENY_WRITE/read-only) with
+ * the 'create if not exist' bit set. The previous code
+ * would fail to open the file read only on a read-only share
+ * as it was checking the flags parameter directly against O_RDONLY,
+ * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
+ * JRA.
+ */
+
+ if (!CAN_WRITE(conn)) {
+ /* It's a read-only share - fail if we wanted to write. */
+ if(accmode != O_RDONLY) {
+ DEBUG(3,("Permission denied opening %s\n", path));
+ return NT_STATUS_ACCESS_DENIED;
+ } else if(flags & O_CREAT) {
+ /* We don't want to write - but we must make sure that
+ O_CREAT doesn't create the file if we have write
+ access into the directory.
+ */
+ flags &= ~O_CREAT;
+ local_flags &= ~O_CREAT;
+ }
+ }
+
+ /*
+ * This little piece of insanity is inspired by the
+ * fact that an NT client can open a file for O_RDONLY,
+ * but set the create disposition to FILE_EXISTS_TRUNCATE.
+ * If the client *can* write to the file, then it expects to
+ * truncate the file, even though it is opening for readonly.
+ * Quicken uses this stupid trick in backup file creation...
+ * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
+ * for helping track this one down. It didn't bite us in 2.0.x
+ * as we always opened files read-write in that release. JRA.
+ */
+
+ if ((accmode == O_RDONLY) && ((flags & O_TRUNC) == O_TRUNC)) {
+ DEBUG(10,("open_file: truncate requested on read-only open "
+ "for file %s\n", path));
+ local_flags = (flags & ~O_ACCMODE)|O_RDWR;
+ }
+
+ if ((open_access_mask & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
+ (!file_existed && (local_flags & O_CREAT)) ||
+ ((local_flags & O_TRUNC) == O_TRUNC) ) {
+ const char *wild;
+
+ /*
+ * We can't actually truncate here as the file may be locked.
+ * open_file_ntcreate will take care of the truncate later. JRA.
+ */
+
+ local_flags &= ~O_TRUNC;
+
+#if defined(O_NONBLOCK) && defined(S_ISFIFO)
+ /*
+ * We would block on opening a FIFO with no one else on the
+ * other end. Do what we used to do and add O_NONBLOCK to the
+ * open flags. JRA.
+ */
+
+ if (file_existed && S_ISFIFO(psbuf->st_mode)) {
+ local_flags |= O_NONBLOCK;
+ }
+#endif
+
+ /* Don't create files with Microsoft wildcard characters. */
+ if (fsp->base_fsp) {
+ /*
+ * wildcard characters are allowed in stream names
+ * only test the basefilename
+ */
+ wild = fsp->base_fsp->fsp_name;
+ } else {
+ wild = path;
+ }
+ if ((local_flags & O_CREAT) && !file_existed &&
+ ms_has_wild(wild)) {
+ return NT_STATUS_OBJECT_NAME_INVALID;
+ }
+
+ /* Actually do the open */
+ status = fd_open(conn, path, fsp, local_flags, unx_mode);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
+ "(flags=%d)\n",
+ path,nt_errstr(status),local_flags,flags));
+ return status;
+ }
+
+ if ((local_flags & O_CREAT) && !file_existed) {
+
+ /* Inherit the ACL if required */
+ if (lp_inherit_perms(SNUM(conn))) {
+ inherit_access_posix_acl(conn, parent_dir, path,
+ unx_mode);
+ }
+
+ /* Change the owner if required. */
+ if (lp_inherit_owner(SNUM(conn))) {
+ change_file_owner_to_parent(conn, parent_dir,
+ fsp);
+ }
+
+ notify_fname(conn, NOTIFY_ACTION_ADDED,
+ FILE_NOTIFY_CHANGE_FILE_NAME, path);
+ }
+
+ } else {
+ fsp->fh->fd = -1; /* What we used to call a stat open. */
+ if (file_existed) {
+ status = check_open_rights(conn,
+ path,
+ access_mask);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("open_file: Access denied on "
+ "file %s\n",
+ path));
+ return status;
+ }
+ }
+ }
+
+ if (!file_existed) {
+ int ret;
+
+ if (fsp->fh->fd == -1) {
+ ret = SMB_VFS_STAT(conn, path, psbuf);
+ } else {
+ ret = SMB_VFS_FSTAT(fsp, psbuf);
+ /* If we have an fd, this stat should succeed. */
+ if (ret == -1) {
+ DEBUG(0,("Error doing fstat on open file %s "
+ "(%s)\n", path,strerror(errno) ));
+ }
+ }
+
+ /* For a non-io open, this stat failing means file not found. JRA */
+ if (ret == -1) {
+ status = map_nt_error_from_unix(errno);
+ fd_close(fsp);
+ return status;
+ }
+ }
+
+ /*
+ * POSIX allows read-only opens of directories. We don't
+ * want to do this (we use a different code path for this)
+ * so catch a directory open and return an EISDIR. JRA.
+ */
+
+ if(S_ISDIR(psbuf->st_mode)) {
+ fd_close(fsp);
+ errno = EISDIR;
+ return NT_STATUS_FILE_IS_A_DIRECTORY;
+ }
+
+ fsp->mode = psbuf->st_mode;
+ fsp->file_id = vfs_file_id_from_sbuf(conn, psbuf);
+ fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
+ fsp->file_pid = req ? req->smbpid : 0;
+ fsp->can_lock = True;
+ fsp->can_read = (access_mask & (FILE_READ_DATA)) ? True : False;
+ if (!CAN_WRITE(conn)) {
+ fsp->can_write = False;
+ } else {
+ fsp->can_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ?
+ True : False;
+ }
+ fsp->print_file = False;
+ fsp->modified = False;
+ fsp->sent_oplock_break = NO_BREAK_SENT;
+ fsp->is_directory = False;
+ if (conn->aio_write_behind_list &&
+ is_in_path(path, conn->aio_write_behind_list, conn->case_sensitive)) {
+ fsp->aio_write_behind = True;
+ }
+
+ string_set(&fsp->fsp_name, path);
+ fsp->wcp = NULL; /* Write cache pointer. */
+
+ DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
+ conn->server_info->unix_name,
+ fsp->fsp_name,
+ BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
+ conn->num_files_open));
+
+ errno = 0;
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Handle the 1 second delay in returning a SHARING_VIOLATION error.
+****************************************************************************/
+
+static void defer_open(struct share_mode_lock *lck,
+ struct timeval request_time,
+ struct timeval timeout,
+ struct smb_request *req,
+ struct deferred_open_record *state)
+{
+ int i;
+
+ /* Paranoia check */
+
+ for (i=0; i<lck->num_share_modes; i++) {
+ struct share_mode_entry *e = &lck->share_modes[i];
+
+ if (!is_deferred_open_entry(e)) {
+ continue;
+ }
+
+ if (procid_is_me(&e->pid) && (e->op_mid == req->mid)) {
+ DEBUG(0, ("Trying to defer an already deferred "
+ "request: mid=%d, exiting\n", req->mid));
+ exit_server("attempt to defer a deferred request");
+ }
+ }
+
+ /* End paranoia check */
+
+ DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
+ "open entry for mid %u\n",
+ (unsigned int)request_time.tv_sec,
+ (unsigned int)request_time.tv_usec,
+ (unsigned int)req->mid));
+
+ if (!push_deferred_smb_message(req, request_time, timeout,
+ (char *)state, sizeof(*state))) {
+ exit_server("push_deferred_smb_message failed");
+ }
+ add_deferred_open(lck, req->mid, request_time, state->id);
+
+ /*
+ * Push the MID of this packet on the signing queue.
+ * We only do this once, the first time we push the packet
+ * onto the deferred open queue, as this has a side effect
+ * of incrementing the response sequence number.
+ */
+
+ srv_defer_sign_response(req->mid);
+}
+
+static void schedule_defer_open(struct share_mode_lock *lck,
+ struct timeval request_time,
+ struct smb_request *req)
+{
+ struct deferred_open_record state;
+
+ /* This is a relative time, added to the absolute
+ request_time value to get the absolute timeout time.
+ Note that if this is the second or greater time we enter
+ this codepath for this particular request mid then
+ request_time is left as the absolute time of the *first*
+ time this request mid was processed. This is what allows
+ the request to eventually time out. */
+
+ struct timeval timeout;
+
+ /* Normally the smbd we asked should respond within
+ * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
+ * the client did, give twice the timeout as a safety
+ * measure here in case the other smbd is stuck
+ * somewhere else. */
+
+ timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*2, 0);
+
+ /* Nothing actually uses state.delayed_for_oplocks
+ but it's handy to differentiate in debug messages
+ between a 30 second delay due to oplock break, and
+ a 1 second delay for share mode conflicts. */
+
+ state.delayed_for_oplocks = True;
+ state.id = lck->id;
+
+ if (!request_timed_out(request_time, timeout)) {
+ defer_open(lck, request_time, timeout, req, &state);
+ }
+}
+
+/****************************************************************************
+ Open a file with a share mode. Passed in an already created files_struct *.
+****************************************************************************/
+
+static NTSTATUS open_file_ntcreate(connection_struct *conn,
+ struct smb_request *req,
+ const char *fname,
+ SMB_STRUCT_STAT *psbuf,
+ uint32 access_mask, /* access bits (FILE_READ_DATA etc.) */
+ uint32 share_access, /* share constants (FILE_SHARE_READ etc) */
+ uint32 create_disposition, /* FILE_OPEN_IF etc. */
+ uint32 create_options, /* options such as delete on close. */
+ uint32 new_dos_attributes, /* attributes used for new file. */
+ int oplock_request, /* internal Samba oplock codes. */
+ /* Information (FILE_EXISTS etc.) */
+ int *pinfo,
+ files_struct *fsp)
+{
+ int flags=0;
+ int flags2=0;
+ bool file_existed = VALID_STAT(*psbuf);
+ bool def_acl = False;
+ bool posix_open = False;
+ bool new_file_created = False;
+ struct file_id id;
+ NTSTATUS fsp_open = NT_STATUS_ACCESS_DENIED;
+ mode_t new_unx_mode = (mode_t)0;
+ mode_t unx_mode = (mode_t)0;
+ int info;
+ uint32 existing_dos_attributes = 0;
+ struct pending_message_list *pml = NULL;
+ struct timeval request_time = timeval_zero();
+ struct share_mode_lock *lck = NULL;
+ uint32 open_access_mask = access_mask;
+ NTSTATUS status;
+ int ret_flock;
+ char *parent_dir;
+ const char *newname;
+
+ ZERO_STRUCT(id);
+
+ if (conn->printer) {
+ /*
+ * Printers are handled completely differently.
+ * Most of the passed parameters are ignored.
+ */
+
+ if (pinfo) {
+ *pinfo = FILE_WAS_CREATED;
+ }
+
+ DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n", fname));
+
+ return print_fsp_open(req, conn, fname, req->vuid, fsp);
+ }
+
+ if (!parent_dirname_talloc(talloc_tos(), fname, &parent_dir,
+ &newname)) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (new_dos_attributes & FILE_FLAG_POSIX_SEMANTICS) {
+ posix_open = True;
+ unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
+ new_dos_attributes = 0;
+ } else {
+ /* We add aARCH to this as this mode is only used if the file is
+ * created new. */
+ unx_mode = unix_mode(conn, new_dos_attributes | aARCH, fname,
+ parent_dir);
+ }
+
+ DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
+ "access_mask=0x%x share_access=0x%x "
+ "create_disposition = 0x%x create_options=0x%x "
+ "unix mode=0%o oplock_request=%d\n",
+ fname, new_dos_attributes, access_mask, share_access,
+ create_disposition, create_options, unx_mode,
+ oplock_request));
+
+ if ((req == NULL) && ((oplock_request & INTERNAL_OPEN_ONLY) == 0)) {
+ DEBUG(0, ("No smb request but not an internal only open!\n"));
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ /*
+ * Only non-internal opens can be deferred at all
+ */
+
+ if ((req != NULL)
+ && ((pml = get_open_deferred_message(req->mid)) != NULL)) {
+ struct deferred_open_record *state =
+ (struct deferred_open_record *)pml->private_data.data;
+
+ /* Remember the absolute time of the original
+ request with this mid. We'll use it later to
+ see if this has timed out. */
+
+ request_time = pml->request_time;
+
+ /* Remove the deferred open entry under lock. */
+ lck = get_share_mode_lock(talloc_tos(), state->id, NULL, NULL,
+ NULL);
+ if (lck == NULL) {
+ DEBUG(0, ("could not get share mode lock\n"));
+ } else {
+ del_deferred_open_entry(lck, req->mid);
+ TALLOC_FREE(lck);
+ }
+
+ /* Ensure we don't reprocess this message. */
+ remove_deferred_open_smb_message(req->mid);
+ }
+
+ status = check_name(conn, fname);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ if (!posix_open) {
+ new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
+ if (file_existed) {
+ existing_dos_attributes = dos_mode(conn, fname, psbuf);
+ }
+ }
+
+ /* ignore any oplock requests if oplocks are disabled */
+ if (!lp_oplocks(SNUM(conn)) || global_client_failed_oplock_break ||
+ IS_VETO_OPLOCK_PATH(conn, fname)) {
+ /* Mask off everything except the private Samba bits. */
+ oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
+ }
+
+ /* this is for OS/2 long file names - say we don't support them */
+ if (!lp_posix_pathnames() && strstr(fname,".+,;=[].")) {
+ /* OS/2 Workplace shell fix may be main code stream in a later
+ * release. */
+ DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
+ "supported.\n"));
+ if (use_nt_status()) {
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+ return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
+ }
+
+ switch( create_disposition ) {
+ /*
+ * Currently we're using FILE_SUPERSEDE as the same as
+ * FILE_OVERWRITE_IF but they really are
+ * different. FILE_SUPERSEDE deletes an existing file
+ * (requiring delete access) then recreates it.
+ */
+ case FILE_SUPERSEDE:
+ /* If file exists replace/overwrite. If file doesn't
+ * exist create. */
+ flags2 |= (O_CREAT | O_TRUNC);
+ break;
+
+ case FILE_OVERWRITE_IF:
+ /* If file exists replace/overwrite. If file doesn't
+ * exist create. */
+ flags2 |= (O_CREAT | O_TRUNC);
+ break;
+
+ case FILE_OPEN:
+ /* If file exists open. If file doesn't exist error. */
+ if (!file_existed) {
+ DEBUG(5,("open_file_ntcreate: FILE_OPEN "
+ "requested for file %s and file "
+ "doesn't exist.\n", fname ));
+ errno = ENOENT;
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+ break;
+
+ case FILE_OVERWRITE:
+ /* If file exists overwrite. If file doesn't exist
+ * error. */
+ if (!file_existed) {
+ DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
+ "requested for file %s and file "
+ "doesn't exist.\n", fname ));
+ errno = ENOENT;
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+ flags2 |= O_TRUNC;
+ break;
+
+ case FILE_CREATE:
+ /* If file exists error. If file doesn't exist
+ * create. */
+ if (file_existed) {
+ DEBUG(5,("open_file_ntcreate: FILE_CREATE "
+ "requested for file %s and file "
+ "already exists.\n", fname ));
+ if (S_ISDIR(psbuf->st_mode)) {
+ errno = EISDIR;
+ } else {
+ errno = EEXIST;
+ }
+ return map_nt_error_from_unix(errno);
+ }
+ flags2 |= (O_CREAT|O_EXCL);
+ break;
+
+ case FILE_OPEN_IF:
+ /* If file exists open. If file doesn't exist
+ * create. */
+ flags2 |= O_CREAT;
+ break;
+
+ default:
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* We only care about matching attributes on file exists and
+ * overwrite. */
+
+ if (!posix_open && file_existed && ((create_disposition == FILE_OVERWRITE) ||
+ (create_disposition == FILE_OVERWRITE_IF))) {
+ if (!open_match_attributes(conn, fname,
+ existing_dos_attributes,
+ new_dos_attributes, psbuf->st_mode,
+ unx_mode, &new_unx_mode)) {
+ DEBUG(5,("open_file_ntcreate: attributes missmatch "
+ "for file %s (%x %x) (0%o, 0%o)\n",
+ fname, existing_dos_attributes,
+ new_dos_attributes,
+ (unsigned int)psbuf->st_mode,
+ (unsigned int)unx_mode ));
+ errno = EACCES;
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ }
+
+ status = calculate_access_mask(conn, fname, file_existed,
+ access_mask,
+ &access_mask);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("open_file_ntcreate: calculate_access_mask "
+ "on file %s returned %s\n",
+ fname,
+ nt_errstr(status)));
+ return status;
+ }
+
+ open_access_mask = access_mask;
+
+ if ((flags2 & O_TRUNC) || (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
+ open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
+ }
+
+ DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
+ "access_mask=0x%x\n", fname, access_mask ));
+
+ /*
+ * Note that we ignore the append flag as append does not
+ * mean the same thing under DOS and Unix.
+ */
+
+ if ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ||
+ (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
+ /* DENY_DOS opens are always underlying read-write on the
+ file handle, no matter what the requested access mask
+ says. */
+ if ((create_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) ||
+ access_mask & (FILE_READ_ATTRIBUTES|FILE_READ_DATA|FILE_READ_EA|FILE_EXECUTE)) {
+ flags = O_RDWR;
+ } else {
+ flags = O_WRONLY;
+ }
+ } else {
+ flags = O_RDONLY;
+ }
+
+ /*
+ * Currently we only look at FILE_WRITE_THROUGH for create options.
+ */
+
+#if defined(O_SYNC)
+ if ((create_options & FILE_WRITE_THROUGH) && lp_strict_sync(SNUM(conn))) {
+ flags2 |= O_SYNC;
+ }
+#endif /* O_SYNC */
+
+ if (posix_open && (access_mask & FILE_APPEND_DATA)) {
+ flags2 |= O_APPEND;
+ }
+
+ if (!posix_open && !CAN_WRITE(conn)) {
+ /*
+ * We should really return a permission denied error if either
+ * O_CREAT or O_TRUNC are set, but for compatibility with
+ * older versions of Samba we just AND them out.
+ */
+ flags2 &= ~(O_CREAT|O_TRUNC);
+ }
+
+ /*
+ * Ensure we can't write on a read-only share or file.
+ */
+
+ if (flags != O_RDONLY && file_existed &&
+ (!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_attributes))) {
+ DEBUG(5,("open_file_ntcreate: write access requested for "
+ "file %s on read only %s\n",
+ fname, !CAN_WRITE(conn) ? "share" : "file" ));
+ errno = EACCES;
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ fsp->file_id = vfs_file_id_from_sbuf(conn, psbuf);
+ fsp->share_access = share_access;
+ fsp->fh->private_options = create_options;
+ fsp->access_mask = open_access_mask; /* We change this to the
+ * requested access_mask after
+ * the open is done. */
+ fsp->posix_open = posix_open;
+
+ /* Ensure no SAMBA_PRIVATE bits can be set. */
+ fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
+
+ if (timeval_is_zero(&request_time)) {
+ request_time = fsp->open_time;
+ }
+
+ if (file_existed) {
+ struct timespec old_write_time = get_mtimespec(psbuf);
+ id = vfs_file_id_from_sbuf(conn, psbuf);
+
+ lck = get_share_mode_lock(talloc_tos(), id,
+ conn->connectpath,
+ fname, &old_write_time);
+
+ if (lck == NULL) {
+ DEBUG(0, ("Could not get share mode lock\n"));
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+
+ /* First pass - send break only on batch oplocks. */
+ if ((req != NULL)
+ && delay_for_oplocks(lck, fsp, req->mid, 1,
+ oplock_request)) {
+ schedule_defer_open(lck, request_time, req);
+ TALLOC_FREE(lck);
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+
+ /* Use the client requested access mask here, not the one we
+ * open with. */
+ status = open_mode_check(conn, fname, lck,
+ access_mask, share_access,
+ create_options, &file_existed);
+
+ if (NT_STATUS_IS_OK(status)) {
+ /* We might be going to allow this open. Check oplock
+ * status again. */
+ /* Second pass - send break for both batch or
+ * exclusive oplocks. */
+ if ((req != NULL)
+ && delay_for_oplocks(lck, fsp, req->mid, 2,
+ oplock_request)) {
+ schedule_defer_open(lck, request_time, req);
+ TALLOC_FREE(lck);
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+ }
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_DELETE_PENDING)) {
+ /* DELETE_PENDING is not deferred for a second */
+ TALLOC_FREE(lck);
+ return status;
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ uint32 can_access_mask;
+ bool can_access = True;
+
+ SMB_ASSERT(NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION));
+
+ /* Check if this can be done with the deny_dos and fcb
+ * calls. */
+ if (create_options &
+ (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
+ NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
+ if (req == NULL) {
+ DEBUG(0, ("DOS open without an SMB "
+ "request!\n"));
+ TALLOC_FREE(lck);
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ /* Use the client requested access mask here,
+ * not the one we open with. */
+ status = fcb_or_dos_open(req,
+ conn,
+ fsp,
+ fname,
+ id,
+ req->smbpid,
+ req->vuid,
+ access_mask,
+ share_access,
+ create_options);
+
+ if (NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(lck);
+ if (pinfo) {
+ *pinfo = FILE_WAS_OPENED;
+ }
+ return NT_STATUS_OK;
+ }
+ }
+
+ /*
+ * This next line is a subtlety we need for
+ * MS-Access. If a file open will fail due to share
+ * permissions and also for security (access) reasons,
+ * we need to return the access failed error, not the
+ * share error. We can't open the file due to kernel
+ * oplock deadlock (it's possible we failed above on
+ * the open_mode_check()) so use a userspace check.
+ */
+
+ if (flags & O_RDWR) {
+ can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
+ } else if (flags & O_WRONLY) {
+ can_access_mask = FILE_WRITE_DATA;
+ } else {
+ can_access_mask = FILE_READ_DATA;
+ }
+
+ if (((can_access_mask & FILE_WRITE_DATA) && !CAN_WRITE(conn)) ||
+ !can_access_file_data(conn,fname,psbuf,can_access_mask)) {
+ can_access = False;
+ }
+
+ /*
+ * If we're returning a share violation, ensure we
+ * cope with the braindead 1 second delay.
+ */
+
+ if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
+ lp_defer_sharing_violations()) {
+ struct timeval timeout;
+ struct deferred_open_record state;
+ int timeout_usecs;
+
+ /* this is a hack to speed up torture tests
+ in 'make test' */
+ timeout_usecs = lp_parm_int(SNUM(conn),
+ "smbd","sharedelay",
+ SHARING_VIOLATION_USEC_WAIT);
+
+ /* This is a relative time, added to the absolute
+ request_time value to get the absolute timeout time.
+ Note that if this is the second or greater time we enter
+ this codepath for this particular request mid then
+ request_time is left as the absolute time of the *first*
+ time this request mid was processed. This is what allows
+ the request to eventually time out. */
+
+ timeout = timeval_set(0, timeout_usecs);
+
+ /* Nothing actually uses state.delayed_for_oplocks
+ but it's handy to differentiate in debug messages
+ between a 30 second delay due to oplock break, and
+ a 1 second delay for share mode conflicts. */
+
+ state.delayed_for_oplocks = False;
+ state.id = id;
+
+ if ((req != NULL)
+ && !request_timed_out(request_time,
+ timeout)) {
+ defer_open(lck, request_time, timeout,
+ req, &state);
+ }
+ }
+
+ TALLOC_FREE(lck);
+ if (can_access) {
+ /*
+ * We have detected a sharing violation here
+ * so return the correct error code
+ */
+ status = NT_STATUS_SHARING_VIOLATION;
+ } else {
+ status = NT_STATUS_ACCESS_DENIED;
+ }
+ return status;
+ }
+
+ /*
+ * We exit this block with the share entry *locked*.....
+ */
+ }
+
+ SMB_ASSERT(!file_existed || (lck != NULL));
+
+ /*
+ * Ensure we pay attention to default ACLs on directories if required.
+ */
+
+ if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
+ (def_acl = directory_has_default_acl(conn, parent_dir))) {
+ unx_mode = 0777;
+ }
+
+ DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
+ "access_mask = 0x%x, open_access_mask = 0x%x\n",
+ (unsigned int)flags, (unsigned int)flags2,
+ (unsigned int)unx_mode, (unsigned int)access_mask,
+ (unsigned int)open_access_mask));
+
+ /*
+ * open_file strips any O_TRUNC flags itself.
+ */
+
+ fsp_open = open_file(fsp, conn, req, parent_dir, newname, fname, psbuf,
+ flags|flags2, unx_mode, access_mask,
+ open_access_mask);
+
+ if (!NT_STATUS_IS_OK(fsp_open)) {
+ if (lck != NULL) {
+ TALLOC_FREE(lck);
+ }
+ return fsp_open;
+ }
+
+ if (!file_existed) {
+ struct timespec old_write_time = get_mtimespec(psbuf);
+ /*
+ * Deal with the race condition where two smbd's detect the
+ * file doesn't exist and do the create at the same time. One
+ * of them will win and set a share mode, the other (ie. this
+ * one) should check if the requested share mode for this
+ * create is allowed.
+ */
+
+ /*
+ * Now the file exists and fsp is successfully opened,
+ * fsp->dev and fsp->inode are valid and should replace the
+ * dev=0,inode=0 from a non existent file. Spotted by
+ * Nadav Danieli <nadavd@exanet.com>. JRA.
+ */
+
+ id = fsp->file_id;
+
+ lck = get_share_mode_lock(talloc_tos(), id,
+ conn->connectpath,
+ fname, &old_write_time);
+
+ if (lck == NULL) {
+ DEBUG(0, ("open_file_ntcreate: Could not get share "
+ "mode lock for %s\n", fname));
+ fd_close(fsp);
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+
+ /* First pass - send break only on batch oplocks. */
+ if ((req != NULL)
+ && delay_for_oplocks(lck, fsp, req->mid, 1,
+ oplock_request)) {
+ schedule_defer_open(lck, request_time, req);
+ TALLOC_FREE(lck);
+ fd_close(fsp);
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+
+ status = open_mode_check(conn, fname, lck,
+ access_mask, share_access,
+ create_options, &file_existed);
+
+ if (NT_STATUS_IS_OK(status)) {
+ /* We might be going to allow this open. Check oplock
+ * status again. */
+ /* Second pass - send break for both batch or
+ * exclusive oplocks. */
+ if ((req != NULL)
+ && delay_for_oplocks(lck, fsp, req->mid, 2,
+ oplock_request)) {
+ schedule_defer_open(lck, request_time, req);
+ TALLOC_FREE(lck);
+ fd_close(fsp);
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ struct deferred_open_record state;
+
+ fd_close(fsp);
+
+ state.delayed_for_oplocks = False;
+ state.id = id;
+
+ /* Do it all over again immediately. In the second
+ * round we will find that the file existed and handle
+ * the DELETE_PENDING and FCB cases correctly. No need
+ * to duplicate the code here. Essentially this is a
+ * "goto top of this function", but don't tell
+ * anybody... */
+
+ if (req != NULL) {
+ defer_open(lck, request_time, timeval_zero(),
+ req, &state);
+ }
+ TALLOC_FREE(lck);
+ return status;
+ }
+
+ /*
+ * We exit this block with the share entry *locked*.....
+ */
+
+ }
+
+ SMB_ASSERT(lck != NULL);
+
+ /* note that we ignore failure for the following. It is
+ basically a hack for NFS, and NFS will never set one of
+ these only read them. Nobody but Samba can ever set a deny
+ mode and we have already checked our more authoritative
+ locking database for permission to set this deny mode. If
+ the kernel refuses the operations then the kernel is wrong.
+ note that GPFS supports it as well - jmcd */
+
+ if (fsp->fh->fd != -1) {
+ ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access);
+ if(ret_flock == -1 ){
+
+ TALLOC_FREE(lck);
+ fd_close(fsp);
+
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+ }
+
+ /*
+ * At this point onwards, we can guarentee that the share entry
+ * is locked, whether we created the file or not, and that the
+ * deny mode is compatible with all current opens.
+ */
+
+ /*
+ * If requested, truncate the file.
+ */
+
+ if (flags2&O_TRUNC) {
+ /*
+ * We are modifing the file after open - update the stat
+ * struct..
+ */
+ if ((SMB_VFS_FTRUNCATE(fsp, 0) == -1) ||
+ (SMB_VFS_FSTAT(fsp, psbuf)==-1)) {
+ status = map_nt_error_from_unix(errno);
+ TALLOC_FREE(lck);
+ fd_close(fsp);
+ return status;
+ }
+ }
+
+ /* Record the options we were opened with. */
+ fsp->share_access = share_access;
+ fsp->fh->private_options = create_options;
+ /*
+ * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
+ */
+ fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
+
+ if (file_existed) {
+ /* stat opens on existing files don't get oplocks. */
+ if (is_stat_open(open_access_mask)) {
+ fsp->oplock_type = NO_OPLOCK;
+ }
+
+ if (!(flags2 & O_TRUNC)) {
+ info = FILE_WAS_OPENED;
+ } else {
+ info = FILE_WAS_OVERWRITTEN;
+ }
+ } else {
+ info = FILE_WAS_CREATED;
+ }
+
+ if (pinfo) {
+ *pinfo = info;
+ }
+
+ /*
+ * Setup the oplock info in both the shared memory and
+ * file structs.
+ */
+
+ if ((fsp->oplock_type != NO_OPLOCK) &&
+ (fsp->oplock_type != FAKE_LEVEL_II_OPLOCK)) {
+ if (!set_file_oplock(fsp, fsp->oplock_type)) {
+ /* Could not get the kernel oplock */
+ fsp->oplock_type = NO_OPLOCK;
+ }
+ }
+
+ if (info == FILE_WAS_OVERWRITTEN || info == FILE_WAS_CREATED || info == FILE_WAS_SUPERSEDED) {
+ new_file_created = True;
+ }
+
+ set_share_mode(lck, fsp, conn->server_info->utok.uid, 0,
+ fsp->oplock_type);
+
+ /* Handle strange delete on close create semantics. */
+ if (create_options & FILE_DELETE_ON_CLOSE) {
+
+ status = can_set_delete_on_close(fsp, True, new_dos_attributes);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ /* Remember to delete the mode we just added. */
+ del_share_mode(lck, fsp);
+ TALLOC_FREE(lck);
+ fd_close(fsp);
+ return status;
+ }
+ /* Note that here we set the *inital* delete on close flag,
+ not the regular one. The magic gets handled in close. */
+ fsp->initial_delete_on_close = True;
+ }
+
+ if (new_file_created) {
+ /* Files should be initially set as archive */
+ if (lp_map_archive(SNUM(conn)) ||
+ lp_store_dos_attributes(SNUM(conn))) {
+ if (!posix_open) {
+ SMB_STRUCT_STAT tmp_sbuf;
+ SET_STAT_INVALID(tmp_sbuf);
+ if (file_set_dosmode(
+ conn, fname,
+ new_dos_attributes | aARCH,
+ &tmp_sbuf, parent_dir,
+ true) == 0) {
+ unx_mode = tmp_sbuf.st_mode;
+ }
+ }
+ }
+ }
+
+ /*
+ * Take care of inherited ACLs on created files - if default ACL not
+ * selected.
+ */
+
+ if (!posix_open && !file_existed && !def_acl) {
+
+ int saved_errno = errno; /* We might get ENOSYS in the next
+ * call.. */
+
+ if (SMB_VFS_FCHMOD_ACL(fsp, unx_mode) == -1 &&
+ errno == ENOSYS) {
+ errno = saved_errno; /* Ignore ENOSYS */
+ }
+
+ } else if (new_unx_mode) {
+
+ int ret = -1;
+
+ /* Attributes need changing. File already existed. */
+
+ {
+ int saved_errno = errno; /* We might get ENOSYS in the
+ * next call.. */
+ ret = SMB_VFS_FCHMOD_ACL(fsp, new_unx_mode);
+
+ if (ret == -1 && errno == ENOSYS) {
+ errno = saved_errno; /* Ignore ENOSYS */
+ } else {
+ DEBUG(5, ("open_file_ntcreate: reset "
+ "attributes of file %s to 0%o\n",
+ fname, (unsigned int)new_unx_mode));
+ ret = 0; /* Don't do the fchmod below. */
+ }
+ }
+
+ if ((ret == -1) &&
+ (SMB_VFS_FCHMOD(fsp, new_unx_mode) == -1))
+ DEBUG(5, ("open_file_ntcreate: failed to reset "
+ "attributes of file %s to 0%o\n",
+ fname, (unsigned int)new_unx_mode));
+ }
+
+ /* If this is a successful open, we must remove any deferred open
+ * records. */
+ if (req != NULL) {
+ del_deferred_open_entry(lck, req->mid);
+ }
+ TALLOC_FREE(lck);
+
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Open a directory from an NT SMB call.
+****************************************************************************/
+
+static NTSTATUS open_directory(connection_struct *conn,
+ struct smb_request *req,
+ const char *fname,
+ SMB_STRUCT_STAT *psbuf,
+ uint32 access_mask,
+ uint32 share_access,
+ uint32 create_disposition,
+ uint32 create_options,
+ uint32 file_attributes,
+ int *pinfo,
+ files_struct **result)
+{
+ files_struct *fsp = NULL;
+ bool dir_existed = VALID_STAT(*psbuf) ? True : False;
+ struct share_mode_lock *lck = NULL;
+ NTSTATUS status;
+ struct timespec mtimespec;
+ int info = 0;
+
+ DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
+ "share_access = 0x%x create_options = 0x%x, "
+ "create_disposition = 0x%x, file_attributes = 0x%x\n",
+ fname,
+ (unsigned int)access_mask,
+ (unsigned int)share_access,
+ (unsigned int)create_options,
+ (unsigned int)create_disposition,
+ (unsigned int)file_attributes));
+
+ if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
+ (conn->fs_capabilities & FILE_NAMED_STREAMS) &&
+ is_ntfs_stream_name(fname)) {
+ DEBUG(2, ("open_directory: %s is a stream name!\n", fname));
+ return NT_STATUS_NOT_A_DIRECTORY;
+ }
+
+ status = calculate_access_mask(conn, fname, dir_existed,
+ access_mask,
+ &access_mask);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("open_directory: calculate_access_mask "
+ "on file %s returned %s\n",
+ fname,
+ nt_errstr(status)));
+ return status;
+ }
+
+ switch( create_disposition ) {
+ case FILE_OPEN:
+
+ info = FILE_WAS_OPENED;
+
+ /*
+ * We want to follow symlinks here.
+ */
+
+ if (SMB_VFS_STAT(conn, fname, psbuf) != 0) {
+ return map_nt_error_from_unix(errno);
+ }
+
+ break;
+
+ case FILE_CREATE:
+
+ /* If directory exists error. If directory doesn't
+ * exist create. */
+
+ status = mkdir_internal(conn,
+ fname,
+ file_attributes,
+ psbuf);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(2, ("open_directory: unable to create "
+ "%s. Error was %s\n", fname,
+ nt_errstr(status)));
+ return status;
+ }
+
+ info = FILE_WAS_CREATED;
+ break;
+
+ case FILE_OPEN_IF:
+ /*
+ * If directory exists open. If directory doesn't
+ * exist create.
+ */
+
+ status = mkdir_internal(conn,
+ fname,
+ file_attributes,
+ psbuf);
+
+ if (NT_STATUS_IS_OK(status)) {
+ info = FILE_WAS_CREATED;
+ }
+
+ if (NT_STATUS_EQUAL(status,
+ NT_STATUS_OBJECT_NAME_COLLISION)) {
+ info = FILE_WAS_OPENED;
+ status = NT_STATUS_OK;
+ }
+
+ break;
+
+ case FILE_SUPERSEDE:
+ case FILE_OVERWRITE:
+ case FILE_OVERWRITE_IF:
+ default:
+ DEBUG(5,("open_directory: invalid create_disposition "
+ "0x%x for directory %s\n",
+ (unsigned int)create_disposition, fname));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if(!S_ISDIR(psbuf->st_mode)) {
+ DEBUG(5,("open_directory: %s is not a directory !\n",
+ fname ));
+ return NT_STATUS_NOT_A_DIRECTORY;
+ }
+
+ if (info == FILE_WAS_OPENED) {
+ status = check_open_rights(conn,
+ fname,
+ access_mask);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("open_directory: check_open_rights on "
+ "file %s failed with %s\n",
+ fname,
+ nt_errstr(status)));
+ return status;
+ }
+ }
+
+ status = file_new(req, conn, &fsp);
+ if(!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ /*
+ * Setup the files_struct for it.
+ */
+
+ fsp->mode = psbuf->st_mode;
+ fsp->file_id = vfs_file_id_from_sbuf(conn, psbuf);
+ fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
+ fsp->file_pid = req ? req->smbpid : 0;
+ fsp->can_lock = False;
+ fsp->can_read = False;
+ fsp->can_write = False;
+
+ fsp->share_access = share_access;
+ fsp->fh->private_options = create_options;
+ /*
+ * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
+ */
+ fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
+ fsp->print_file = False;
+ fsp->modified = False;
+ fsp->oplock_type = NO_OPLOCK;
+ fsp->sent_oplock_break = NO_BREAK_SENT;
+ fsp->is_directory = True;
+ fsp->posix_open = (file_attributes & FILE_FLAG_POSIX_SEMANTICS) ? True : False;
+
+ string_set(&fsp->fsp_name,fname);
+
+ mtimespec = get_mtimespec(psbuf);
+
+ lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
+ conn->connectpath,
+ fname, &mtimespec);
+
+ if (lck == NULL) {
+ DEBUG(0, ("open_directory: Could not get share mode lock for %s\n", fname));
+ file_free(req, fsp);
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+
+ status = open_mode_check(conn, fname, lck,
+ access_mask, share_access,
+ create_options, &dir_existed);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(lck);
+ file_free(req, fsp);
+ return status;
+ }
+
+ set_share_mode(lck, fsp, conn->server_info->utok.uid, 0, NO_OPLOCK);
+
+ /* For directories the delete on close bit at open time seems
+ always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
+ if (create_options & FILE_DELETE_ON_CLOSE) {
+ status = can_set_delete_on_close(fsp, True, 0);
+ if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
+ TALLOC_FREE(lck);
+ file_free(req, fsp);
+ return status;
+ }
+
+ if (NT_STATUS_IS_OK(status)) {
+ /* Note that here we set the *inital* delete on close flag,
+ not the regular one. The magic gets handled in close. */
+ fsp->initial_delete_on_close = True;
+ }
+ }
+
+ TALLOC_FREE(lck);
+
+ if (pinfo) {
+ *pinfo = info;
+ }
+
+ *result = fsp;
+ return NT_STATUS_OK;
+}
+
+/*
+ * If a main file is opened for delete, all streams need to be checked for
+ * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
+ * If that works, delete them all by setting the delete on close and close.
+ */
+
+static NTSTATUS open_streams_for_delete(connection_struct *conn,
+ const char *fname)
+{
+ struct stream_struct *stream_info;
+ files_struct **streams;
+ int i;
+ unsigned int num_streams;
+ TALLOC_CTX *frame = talloc_stackframe();
+ NTSTATUS status;
+
+ status = SMB_VFS_STREAMINFO(conn, NULL, fname, talloc_tos(),
+ &num_streams, &stream_info);
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)
+ || NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
+ DEBUG(10, ("no streams around\n"));
+ TALLOC_FREE(frame);
+ return NT_STATUS_OK;
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("SMB_VFS_STREAMINFO failed: %s\n",
+ nt_errstr(status)));
+ goto fail;
+ }
+
+ DEBUG(10, ("open_streams_for_delete found %d streams\n",
+ num_streams));
+
+ if (num_streams == 0) {
+ TALLOC_FREE(frame);
+ return NT_STATUS_OK;
+ }
+
+ streams = TALLOC_ARRAY(talloc_tos(), files_struct *, num_streams);
+ if (streams == NULL) {
+ DEBUG(0, ("talloc failed\n"));
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
+ }
+
+ for (i=0; i<num_streams; i++) {
+ char *streamname;
+
+ if (strequal(stream_info[i].name, "::$DATA")) {
+ streams[i] = NULL;
+ continue;
+ }
+
+ streamname = talloc_asprintf(talloc_tos(), "%s%s", fname,
+ stream_info[i].name);
+
+ if (streamname == NULL) {
+ DEBUG(0, ("talloc_aprintf failed\n"));
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
+ }
+
+ status = create_file_unixpath
+ (conn, /* conn */
+ NULL, /* req */
+ streamname, /* fname */
+ DELETE_ACCESS, /* access_mask */
+ FILE_SHARE_READ | FILE_SHARE_WRITE
+ | FILE_SHARE_DELETE, /* share_access */
+ FILE_OPEN, /* create_disposition*/
+ NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE, /* create_options */
+ FILE_ATTRIBUTE_NORMAL, /* file_attributes */
+ 0, /* oplock_request */
+ 0, /* allocation_size */
+ NULL, /* sd */
+ NULL, /* ea_list */
+ &streams[i], /* result */
+ NULL, /* pinfo */
+ NULL); /* psbuf */
+
+ TALLOC_FREE(streamname);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("Could not open stream %s: %s\n",
+ streamname, nt_errstr(status)));
+ break;
+ }
+ }
+
+ /*
+ * don't touch the variable "status" beyond this point :-)
+ */
+
+ for (i -= 1 ; i >= 0; i--) {
+ if (streams[i] == NULL) {
+ continue;
+ }
+
+ DEBUG(10, ("Closing stream # %d, %s\n", i,
+ streams[i]->fsp_name));
+ close_file(NULL, streams[i], NORMAL_CLOSE);
+ }
+
+ fail:
+ TALLOC_FREE(frame);
+ return status;
+}
+
+/*
+ * Wrapper around open_file_ntcreate and open_directory
+ */
+
+static NTSTATUS create_file_unixpath(connection_struct *conn,
+ struct smb_request *req,
+ const char *fname,
+ uint32_t access_mask,
+ uint32_t share_access,
+ uint32_t create_disposition,
+ uint32_t create_options,
+ uint32_t file_attributes,
+ uint32_t oplock_request,
+ uint64_t allocation_size,
+ struct security_descriptor *sd,
+ struct ea_list *ea_list,
+
+ files_struct **result,
+ int *pinfo,
+ SMB_STRUCT_STAT *psbuf)
+{
+ SMB_STRUCT_STAT sbuf;
+ int info = FILE_WAS_OPENED;
+ files_struct *base_fsp = NULL;
+ files_struct *fsp = NULL;
+ NTSTATUS status;
+
+ DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
+ "file_attributes = 0x%x, share_access = 0x%x, "
+ "create_disposition = 0x%x create_options = 0x%x "
+ "oplock_request = 0x%x ea_list = 0x%p, sd = 0x%p, "
+ "fname = %s\n",
+ (unsigned int)access_mask,
+ (unsigned int)file_attributes,
+ (unsigned int)share_access,
+ (unsigned int)create_disposition,
+ (unsigned int)create_options,
+ (unsigned int)oplock_request,
+ ea_list, sd, fname));
+
+ if (create_options & FILE_OPEN_BY_FILE_ID) {
+ status = NT_STATUS_NOT_SUPPORTED;
+ goto fail;
+ }
+
+ if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto fail;
+ }
+
+ if (req == NULL) {
+ oplock_request |= INTERNAL_OPEN_ONLY;
+ }
+
+ if (psbuf != NULL) {
+ sbuf = *psbuf;
+ }
+ else {
+ if (SMB_VFS_STAT(conn, fname, &sbuf) == -1) {
+ SET_STAT_INVALID(sbuf);
+ }
+ }
+
+ if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
+ && (access_mask & DELETE_ACCESS)
+ && !is_ntfs_stream_name(fname)) {
+ /*
+ * We can't open a file with DELETE access if any of the
+ * streams is open without FILE_SHARE_DELETE
+ */
+ status = open_streams_for_delete(conn, fname);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+ }
+
+ /* This is the correct thing to do (check every time) but can_delete
+ * is expensive (it may have to read the parent directory
+ * permissions). So for now we're not doing it unless we have a strong
+ * hint the client is really going to delete this file. If the client
+ * is forcing FILE_CREATE let the filesystem take care of the
+ * permissions. */
+
+ /* Setting FILE_SHARE_DELETE is the hint. */
+
+ if (lp_acl_check_permissions(SNUM(conn))
+ && (create_disposition != FILE_CREATE)
+ && (share_access & FILE_SHARE_DELETE)
+ && (access_mask & DELETE_ACCESS)
+ && (!can_delete_file_in_directory(conn, fname))) {
+ status = NT_STATUS_ACCESS_DENIED;
+ goto fail;
+ }
+
+#if 0
+ /* We need to support SeSecurityPrivilege for this. */
+ if ((access_mask & SEC_RIGHT_SYSTEM_SECURITY) &&
+ !user_has_privileges(current_user.nt_user_token,
+ &se_security)) {
+ status = NT_STATUS_PRIVILEGE_NOT_HELD;
+ goto fail;
+ }
+#endif
+
+ if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
+ && is_ntfs_stream_name(fname)
+ && (!(create_options & NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE))) {
+ char *base;
+ uint32 base_create_disposition;
+
+ if (create_options & FILE_DIRECTORY_FILE) {
+ status = NT_STATUS_NOT_A_DIRECTORY;
+ goto fail;
+ }
+
+ status = split_ntfs_stream_name(talloc_tos(), fname,
+ &base, NULL);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("create_file_unixpath: "
+ "split_ntfs_stream_name failed: %s\n",
+ nt_errstr(status)));
+ goto fail;
+ }
+
+ SMB_ASSERT(!is_ntfs_stream_name(base)); /* paranoia.. */
+
+ switch (create_disposition) {
+ case FILE_OPEN:
+ base_create_disposition = FILE_OPEN;
+ break;
+ default:
+ base_create_disposition = FILE_OPEN_IF;
+ break;
+ }
+
+ status = create_file_unixpath(conn, NULL, base, 0,
+ FILE_SHARE_READ
+ | FILE_SHARE_WRITE
+ | FILE_SHARE_DELETE,
+ base_create_disposition,
+ 0, 0, 0, 0, NULL, NULL,
+ &base_fsp, NULL, NULL);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("create_file_unixpath for base %s failed: "
+ "%s\n", base, nt_errstr(status)));
+ goto fail;
+ }
+ /* we don't need to low level fd */
+ fd_close(base_fsp);
+ }
+
+ /*
+ * If it's a request for a directory open, deal with it separately.
+ */
+
+ if (create_options & FILE_DIRECTORY_FILE) {
+
+ if (create_options & FILE_NON_DIRECTORY_FILE) {
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto fail;
+ }
+
+ /* Can't open a temp directory. IFS kit test. */
+ if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
+ (file_attributes & FILE_ATTRIBUTE_TEMPORARY)) {
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto fail;
+ }
+
+ /*
+ * We will get a create directory here if the Win32
+ * app specified a security descriptor in the
+ * CreateDirectory() call.
+ */
+
+ oplock_request = 0;
+ status = open_directory(
+ conn, req, fname, &sbuf, access_mask, share_access,
+ create_disposition, create_options, file_attributes,
+ &info, &fsp);
+ } else {
+
+ /*
+ * Ordinary file case.
+ */
+
+ status = file_new(req, conn, &fsp);
+ if(!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+
+ /*
+ * We're opening the stream element of a base_fsp
+ * we already opened. Set up the base_fsp pointer.
+ */
+ if (base_fsp) {
+ fsp->base_fsp = base_fsp;
+ }
+
+ status = open_file_ntcreate(conn,
+ req,
+ fname,
+ &sbuf,
+ access_mask,
+ share_access,
+ create_disposition,
+ create_options,
+ file_attributes,
+ oplock_request,
+ &info,
+ fsp);
+
+ if(!NT_STATUS_IS_OK(status)) {
+ file_free(req, fsp);
+ fsp = NULL;
+ }
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
+
+ /* A stream open never opens a directory */
+
+ if (base_fsp) {
+ status = NT_STATUS_FILE_IS_A_DIRECTORY;
+ goto fail;
+ }
+
+ /*
+ * Fail the open if it was explicitly a non-directory
+ * file.
+ */
+
+ if (create_options & FILE_NON_DIRECTORY_FILE) {
+ status = NT_STATUS_FILE_IS_A_DIRECTORY;
+ goto fail;
+ }
+
+ oplock_request = 0;
+ status = open_directory(
+ conn, req, fname, &sbuf, access_mask,
+ share_access, create_disposition,
+ create_options, file_attributes,
+ &info, &fsp);
+ }
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+
+ fsp->base_fsp = base_fsp;
+
+ /*
+ * According to the MS documentation, the only time the security
+ * descriptor is applied to the opened file is iff we *created* the
+ * file; an existing file stays the same.
+ *
+ * Also, it seems (from observation) that you can open the file with
+ * any access mask but you can still write the sd. We need to override
+ * the granted access before we call set_sd
+ * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
+ */
+
+ if ((sd != NULL) && (info == FILE_WAS_CREATED)
+ && lp_nt_acl_support(SNUM(conn))) {
+
+ uint32_t sec_info_sent;
+ uint32_t saved_access_mask = fsp->access_mask;
+
+ sec_info_sent = get_sec_info(sd);
+
+ fsp->access_mask = FILE_GENERIC_ALL;
+
+ /* Convert all the generic bits. */
+ security_acl_map_generic(sd->dacl, &file_generic_mapping);
+ security_acl_map_generic(sd->sacl, &file_generic_mapping);
+
+ if (sec_info_sent & (OWNER_SECURITY_INFORMATION|
+ GROUP_SECURITY_INFORMATION|
+ DACL_SECURITY_INFORMATION|
+ SACL_SECURITY_INFORMATION)) {
+ status = SMB_VFS_FSET_NT_ACL(fsp, sec_info_sent, sd);
+ }
+
+ fsp->access_mask = saved_access_mask;
+
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+ }
+
+ if ((ea_list != NULL) && (info == FILE_WAS_CREATED)) {
+ status = set_ea(conn, fsp, fname, ea_list);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+ }
+
+ if (!fsp->is_directory && S_ISDIR(sbuf.st_mode)) {
+ status = NT_STATUS_ACCESS_DENIED;
+ goto fail;
+ }
+
+ /* Save the requested allocation size. */
+ if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
+ if (allocation_size
+ && (allocation_size > sbuf.st_size)) {
+ fsp->initial_allocation_size = smb_roundup(
+ fsp->conn, allocation_size);
+ if (fsp->is_directory) {
+ /* Can't set allocation size on a directory. */
+ status = NT_STATUS_ACCESS_DENIED;
+ goto fail;
+ }
+ if (vfs_allocate_file_space(
+ fsp, fsp->initial_allocation_size) == -1) {
+ status = NT_STATUS_DISK_FULL;
+ goto fail;
+ }
+ } else {
+ fsp->initial_allocation_size = smb_roundup(
+ fsp->conn, (uint64_t)sbuf.st_size);
+ }
+ }
+
+ DEBUG(10, ("create_file_unixpath: info=%d\n", info));
+
+ *result = fsp;
+ if (pinfo != NULL) {
+ *pinfo = info;
+ }
+ if (psbuf != NULL) {
+ if ((fsp->fh == NULL) || (fsp->fh->fd == -1)) {
+ *psbuf = sbuf;
+ }
+ else {
+ SMB_VFS_FSTAT(fsp, psbuf);
+ }
+ }
+ return NT_STATUS_OK;
+
+ fail:
+ DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status)));
+
+ if (fsp != NULL) {
+ if (base_fsp && fsp->base_fsp == base_fsp) {
+ /*
+ * The close_file below will close
+ * fsp->base_fsp.
+ */
+ base_fsp = NULL;
+ }
+ close_file(req, fsp, ERROR_CLOSE);
+ fsp = NULL;
+ }
+ if (base_fsp != NULL) {
+ close_file(req, base_fsp, ERROR_CLOSE);
+ base_fsp = NULL;
+ }
+ return status;
+}
+NTSTATUS create_file_default(connection_struct *conn,
+ struct smb_request *req,
+ uint16_t root_dir_fid,
+ const char *fname,
+ uint32_t create_file_flags,
+ uint32_t access_mask,
+ uint32_t share_access,
+ uint32_t create_disposition,
+ uint32_t create_options,
+ uint32_t file_attributes,
+ uint32_t oplock_request,
+ uint64_t allocation_size,
+ struct security_descriptor *sd,
+ struct ea_list *ea_list,
+
+ files_struct **result,
+ int *pinfo,
+ SMB_STRUCT_STAT *psbuf)
+{
+ struct case_semantics_state *case_state = NULL;
+ SMB_STRUCT_STAT sbuf;
+ int info = FILE_WAS_OPENED;
+ files_struct *fsp = NULL;
+ NTSTATUS status;
+
+ DEBUG(10,("create_file: access_mask = 0x%x "
+ "file_attributes = 0x%x, share_access = 0x%x, "
+ "create_disposition = 0x%x create_options = 0x%x "
+ "oplock_request = 0x%x "
+ "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
+ "create_file_flags = 0x%x, fname = %s\n",
+ (unsigned int)access_mask,
+ (unsigned int)file_attributes,
+ (unsigned int)share_access,
+ (unsigned int)create_disposition,
+ (unsigned int)create_options,
+ (unsigned int)oplock_request,
+ (unsigned int)root_dir_fid,
+ ea_list, sd, create_file_flags, fname));
+
+ /*
+ * Calculate the filename from the root_dir_if if necessary.
+ */
+
+ if (root_dir_fid != 0) {
+ char *new_fname;
+
+ status = get_relative_fid_filename(conn, req, root_dir_fid,
+ fname, &new_fname);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+
+ fname = new_fname;
+ }
+
+ /*
+ * Check to see if this is a mac fork of some kind.
+ */
+
+ if (is_ntfs_stream_name(fname)) {
+ enum FAKE_FILE_TYPE fake_file_type;
+
+ fake_file_type = is_fake_file(fname);
+
+ if (fake_file_type != FAKE_FILE_TYPE_NONE) {
+
+ /*
+ * Here we go! support for changing the disk quotas
+ * --metze
+ *
+ * We need to fake up to open this MAGIC QUOTA file
+ * and return a valid FID.
+ *
+ * w2k close this file directly after openening xp
+ * also tries a QUERY_FILE_INFO on the file and then
+ * close it
+ */
+ status = open_fake_file(req, conn, req->vuid,
+ fake_file_type, fname,
+ access_mask, &fsp);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+
+ ZERO_STRUCT(sbuf);
+ goto done;
+ }
+
+ if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
+ status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
+ goto fail;
+ }
+ }
+
+ if ((req != NULL) && (req->flags2 & FLAGS2_DFS_PATHNAMES)) {
+ char *resolved_fname;
+
+ status = resolve_dfspath(talloc_tos(), conn, true, fname,
+ &resolved_fname);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ /*
+ * For PATH_NOT_COVERED we had
+ * reply_botherror(req, NT_STATUS_PATH_NOT_COVERED,
+ * ERRSRV, ERRbadpath);
+ * Need to fix in callers
+ */
+ goto fail;
+ }
+ fname = resolved_fname;
+ }
+
+ /*
+ * Check if POSIX semantics are wanted.
+ */
+
+ if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
+ case_state = set_posix_case_semantics(talloc_tos(), conn);
+ }
+
+ if (create_file_flags & CFF_DOS_PATH) {
+ char *converted_fname;
+
+ SET_STAT_INVALID(sbuf);
+
+ status = unix_convert(talloc_tos(), conn, fname, False,
+ &converted_fname, NULL, &sbuf);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+ fname = converted_fname;
+ } else {
+ if (psbuf != NULL) {
+ sbuf = *psbuf;
+ } else {
+ if (SMB_VFS_STAT(conn, fname, &sbuf) == -1) {
+ SET_STAT_INVALID(sbuf);
+ }
+ }
+
+ }
+
+ TALLOC_FREE(case_state);
+
+ /* All file access must go through check_name() */
+
+ status = check_name(conn, fname);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+
+ status = create_file_unixpath(
+ conn, req, fname, access_mask, share_access,
+ create_disposition, create_options, file_attributes,
+ oplock_request, allocation_size, sd, ea_list,
+ &fsp, &info, &sbuf);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+
+ done:
+ DEBUG(10, ("create_file: info=%d\n", info));
+
+ *result = fsp;
+ if (pinfo != NULL) {
+ *pinfo = info;
+ }
+ if (psbuf != NULL) {
+ *psbuf = sbuf;
+ }
+ return NT_STATUS_OK;
+
+ fail:
+ DEBUG(10, ("create_file: %s\n", nt_errstr(status)));
+
+ if (fsp != NULL) {
+ close_file(req, fsp, ERROR_CLOSE);
+ fsp = NULL;
+ }
+ return status;
+}
git.samba.org / gd / samba-autobuild / .git / commitdiff