mirror of
https://github.com/samba-team/samba.git
synced 2024-12-25 23:21:54 +03:00
3191040c3d
Prevent systems with "store dos attributes = yes" from overriding FILE_WRITE_ATTRIBUITES.
3888 lines
105 KiB
C
3888 lines
105 KiB
C
/*
|
|
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"
|
|
#include "system/filesys.h"
|
|
#include "printing.h"
|
|
#include "smbd/smbd.h"
|
|
#include "smbd/globals.h"
|
|
#include "fake_file.h"
|
|
#include "../libcli/security/security.h"
|
|
#include "../librpc/gen_ndr/ndr_security.h"
|
|
#include "../librpc/gen_ndr/open_files.h"
|
|
#include "auth.h"
|
|
#include "messages.h"
|
|
|
|
extern const struct generic_mapping file_generic_mapping;
|
|
|
|
struct deferred_open_record {
|
|
bool delayed_for_oplocks;
|
|
struct file_id id;
|
|
};
|
|
|
|
/****************************************************************************
|
|
If the requester wanted DELETE_ACCESS and was rejected because
|
|
the file ACL didn't include DELETE_ACCESS, see if the parent ACL
|
|
ovverrides this.
|
|
****************************************************************************/
|
|
|
|
static bool parent_override_delete(connection_struct *conn,
|
|
const struct smb_filename *smb_fname,
|
|
uint32_t access_mask,
|
|
uint32_t rejected_mask)
|
|
{
|
|
if ((access_mask & DELETE_ACCESS) &&
|
|
(rejected_mask & DELETE_ACCESS) &&
|
|
can_delete_file_in_directory(conn, smb_fname)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Check if we have open rights.
|
|
****************************************************************************/
|
|
|
|
NTSTATUS smbd_check_access_rights(struct connection_struct *conn,
|
|
const struct smb_filename *smb_fname,
|
|
uint32_t access_mask)
|
|
{
|
|
/* Check if we have rights to open. */
|
|
NTSTATUS status;
|
|
struct security_descriptor *sd = NULL;
|
|
uint32_t rejected_share_access;
|
|
uint32_t rejected_mask = access_mask;
|
|
|
|
rejected_share_access = access_mask & ~(conn->share_access);
|
|
|
|
if (rejected_share_access) {
|
|
DEBUG(10, ("smbd_check_access_rights: rejected share access 0x%x "
|
|
"on %s (0x%x)\n",
|
|
(unsigned int)access_mask,
|
|
smb_fname_str_dbg(smb_fname),
|
|
(unsigned int)rejected_share_access ));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
if (get_current_uid(conn) == (uid_t)0) {
|
|
/* I'm sorry sir, I didn't know you were root... */
|
|
DEBUG(10,("smbd_check_access_rights: root override "
|
|
"on %s. Granting 0x%x\n",
|
|
smb_fname_str_dbg(smb_fname),
|
|
(unsigned int)access_mask ));
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
if ((access_mask & DELETE_ACCESS) && !lp_acl_check_permissions(SNUM(conn))) {
|
|
DEBUG(10,("smbd_check_access_rights: not checking ACL "
|
|
"on DELETE_ACCESS on file %s. Granting 0x%x\n",
|
|
smb_fname_str_dbg(smb_fname),
|
|
(unsigned int)access_mask ));
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
if (access_mask == DELETE_ACCESS &&
|
|
VALID_STAT(smb_fname->st) &&
|
|
S_ISLNK(smb_fname->st.st_ex_mode)) {
|
|
/* We can always delete a symlink. */
|
|
DEBUG(10,("smbd_check_access_rights: not checking ACL "
|
|
"on DELETE_ACCESS on symlink %s.\n",
|
|
smb_fname_str_dbg(smb_fname) ));
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
|
|
(SECINFO_OWNER |
|
|
SECINFO_GROUP |
|
|
SECINFO_DACL),&sd);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("smbd_check_access_rights: Could not get acl "
|
|
"on %s: %s\n",
|
|
smb_fname_str_dbg(smb_fname),
|
|
nt_errstr(status)));
|
|
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
|
|
goto access_denied;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Never test FILE_READ_ATTRIBUTES. se_access_check() also takes care of
|
|
* owner WRITE_DAC and READ_CONTROL.
|
|
*/
|
|
status = se_access_check(sd,
|
|
get_current_nttok(conn),
|
|
(access_mask & ~FILE_READ_ATTRIBUTES),
|
|
&rejected_mask);
|
|
|
|
DEBUG(10,("smbd_check_access_rights: file %s requesting "
|
|
"0x%x returning 0x%x (%s)\n",
|
|
smb_fname_str_dbg(smb_fname),
|
|
(unsigned int)access_mask,
|
|
(unsigned int)rejected_mask,
|
|
nt_errstr(status) ));
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
if (DEBUGLEVEL >= 10) {
|
|
DEBUG(10,("smbd_check_access_rights: acl for %s is:\n",
|
|
smb_fname_str_dbg(smb_fname) ));
|
|
NDR_PRINT_DEBUG(security_descriptor, sd);
|
|
}
|
|
}
|
|
|
|
TALLOC_FREE(sd);
|
|
|
|
if (NT_STATUS_IS_OK(status) ||
|
|
!NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
|
|
return status;
|
|
}
|
|
|
|
/* Here we know status == NT_STATUS_ACCESS_DENIED. */
|
|
|
|
access_denied:
|
|
|
|
if ((access_mask & FILE_WRITE_ATTRIBUTES) &&
|
|
(rejected_mask & FILE_WRITE_ATTRIBUTES) &&
|
|
!lp_store_dos_attributes(SNUM(conn)) &&
|
|
(lp_map_readonly(SNUM(conn)) ||
|
|
lp_map_archive(SNUM(conn)) ||
|
|
lp_map_hidden(SNUM(conn)) ||
|
|
lp_map_system(SNUM(conn)))) {
|
|
rejected_mask &= ~FILE_WRITE_ATTRIBUTES;
|
|
|
|
DEBUG(10,("smbd_check_access_rights: "
|
|
"overrode "
|
|
"FILE_WRITE_ATTRIBUTES "
|
|
"on file %s\n",
|
|
smb_fname_str_dbg(smb_fname)));
|
|
}
|
|
|
|
if (parent_override_delete(conn,
|
|
smb_fname,
|
|
access_mask,
|
|
rejected_mask)) {
|
|
/* Were we trying to do an open
|
|
* for delete and didn't get DELETE
|
|
* access (only) ? Check if the
|
|
* directory allows DELETE_CHILD.
|
|
* See here:
|
|
* http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
|
|
* for details. */
|
|
|
|
rejected_mask &= ~DELETE_ACCESS;
|
|
|
|
DEBUG(10,("smbd_check_access_rights: "
|
|
"overrode "
|
|
"DELETE_ACCESS on "
|
|
"file %s\n",
|
|
smb_fname_str_dbg(smb_fname)));
|
|
}
|
|
|
|
if (rejected_mask != 0) {
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
} else {
|
|
return NT_STATUS_OK;
|
|
}
|
|
}
|
|
|
|
static NTSTATUS check_parent_access(struct connection_struct *conn,
|
|
struct smb_filename *smb_fname,
|
|
uint32_t access_mask,
|
|
char **pp_parent_dir)
|
|
{
|
|
NTSTATUS status;
|
|
char *parent_dir = NULL;
|
|
struct security_descriptor *parent_sd = NULL;
|
|
uint32_t access_granted = 0;
|
|
|
|
if (!parent_dirname(talloc_tos(),
|
|
smb_fname->base_name,
|
|
&parent_dir,
|
|
NULL)) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
if (pp_parent_dir) {
|
|
*pp_parent_dir = parent_dir;
|
|
}
|
|
|
|
if (get_current_uid(conn) == (uid_t)0) {
|
|
/* I'm sorry sir, I didn't know you were root... */
|
|
DEBUG(10,("check_parent_access: root override "
|
|
"on %s. Granting 0x%x\n",
|
|
smb_fname_str_dbg(smb_fname),
|
|
(unsigned int)access_mask ));
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
status = SMB_VFS_GET_NT_ACL(conn,
|
|
parent_dir,
|
|
SECINFO_DACL,
|
|
&parent_sd);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(5,("check_parent_access: SMB_VFS_GET_NT_ACL failed for "
|
|
"%s with error %s\n",
|
|
parent_dir,
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Never test FILE_READ_ATTRIBUTES. se_access_check() also takes care of
|
|
* owner WRITE_DAC and READ_CONTROL.
|
|
*/
|
|
status = se_access_check(parent_sd,
|
|
get_current_nttok(conn),
|
|
(access_mask & ~FILE_READ_ATTRIBUTES),
|
|
&access_granted);
|
|
if(!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(5,("check_parent_access: access check "
|
|
"on directory %s for "
|
|
"path %s for mask 0x%x returned (0x%x) %s\n",
|
|
parent_dir,
|
|
smb_fname->base_name,
|
|
access_mask,
|
|
access_granted,
|
|
nt_errstr(status) ));
|
|
return status;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
fd support routines - attempt to do a dos_open.
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS fd_open(struct connection_struct *conn,
|
|
files_struct *fsp,
|
|
int flags,
|
|
mode_t mode)
|
|
{
|
|
struct smb_filename *smb_fname = fsp->fsp_name;
|
|
NTSTATUS status = NT_STATUS_OK;
|
|
|
|
#ifdef O_NOFOLLOW
|
|
/*
|
|
* Never follow symlinks on a POSIX client. The
|
|
* client should be doing this.
|
|
*/
|
|
|
|
if (fsp->posix_open || !lp_symlinks(SNUM(conn))) {
|
|
flags |= O_NOFOLLOW;
|
|
}
|
|
#endif
|
|
|
|
fsp->fh->fd = SMB_VFS_OPEN(conn, smb_fname, fsp, flags, mode);
|
|
if (fsp->fh->fd == -1) {
|
|
status = map_nt_error_from_unix(errno);
|
|
if (errno == EMFILE) {
|
|
static time_t last_warned = 0L;
|
|
|
|
if (time((time_t *) NULL) > last_warned) {
|
|
DEBUG(0,("Too many open files, unable "
|
|
"to open more! smbd's max "
|
|
"open files = %d\n",
|
|
lp_max_open_files()));
|
|
last_warned = time((time_t *) NULL);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
|
|
smb_fname_str_dbg(smb_fname), flags, (int)mode, fsp->fh->fd,
|
|
(fsp->fh->fd == -1) ? strerror(errno) : "" ));
|
|
|
|
return status;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Close the file associated with a fsp.
|
|
****************************************************************************/
|
|
|
|
NTSTATUS fd_close(files_struct *fsp)
|
|
{
|
|
int ret;
|
|
|
|
if (fsp->dptr) {
|
|
dptr_CloseDir(fsp);
|
|
}
|
|
if (fsp->fh->fd == -1) {
|
|
return NT_STATUS_OK; /* What we used to call a stat open. */
|
|
}
|
|
if (fsp->fh->ref_count > 1) {
|
|
return NT_STATUS_OK; /* Shared handle. Only close last reference. */
|
|
}
|
|
|
|
ret = SMB_VFS_CLOSE(fsp);
|
|
fsp->fh->fd = -1;
|
|
if (ret == -1) {
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Change the ownership of a file to that of the parent directory.
|
|
Do this by fd if possible.
|
|
****************************************************************************/
|
|
|
|
void change_file_owner_to_parent(connection_struct *conn,
|
|
const char *inherit_from_dir,
|
|
files_struct *fsp)
|
|
{
|
|
struct smb_filename *smb_fname_parent = NULL;
|
|
NTSTATUS status;
|
|
int ret;
|
|
|
|
status = create_synthetic_smb_fname(talloc_tos(), inherit_from_dir,
|
|
NULL, NULL, &smb_fname_parent);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return;
|
|
}
|
|
|
|
ret = SMB_VFS_STAT(conn, smb_fname_parent);
|
|
if (ret == -1) {
|
|
DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
|
|
"directory %s. Error was %s\n",
|
|
smb_fname_str_dbg(smb_fname_parent),
|
|
strerror(errno)));
|
|
TALLOC_FREE(smb_fname_parent);
|
|
return;
|
|
}
|
|
|
|
if (smb_fname_parent->st.st_ex_uid == fsp->fsp_name->st.st_ex_uid) {
|
|
/* Already this uid - no need to change. */
|
|
DEBUG(10,("change_file_owner_to_parent: file %s "
|
|
"is already owned by uid %d\n",
|
|
fsp_str_dbg(fsp),
|
|
(int)fsp->fsp_name->st.st_ex_uid ));
|
|
TALLOC_FREE(smb_fname_parent);
|
|
return;
|
|
}
|
|
|
|
become_root();
|
|
ret = SMB_VFS_FCHOWN(fsp, smb_fname_parent->st.st_ex_uid, (gid_t)-1);
|
|
unbecome_root();
|
|
if (ret == -1) {
|
|
DEBUG(0,("change_file_owner_to_parent: failed to fchown "
|
|
"file %s to parent directory uid %u. Error "
|
|
"was %s\n", fsp_str_dbg(fsp),
|
|
(unsigned int)smb_fname_parent->st.st_ex_uid,
|
|
strerror(errno) ));
|
|
} else {
|
|
DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
|
|
"parent directory uid %u.\n", fsp_str_dbg(fsp),
|
|
(unsigned int)smb_fname_parent->st.st_ex_uid));
|
|
/* Ensure the uid entry is updated. */
|
|
fsp->fsp_name->st.st_ex_uid = smb_fname_parent->st.st_ex_uid;
|
|
}
|
|
|
|
TALLOC_FREE(smb_fname_parent);
|
|
}
|
|
|
|
NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
|
|
const char *inherit_from_dir,
|
|
const char *fname,
|
|
SMB_STRUCT_STAT *psbuf)
|
|
{
|
|
struct smb_filename *smb_fname_parent = NULL;
|
|
struct smb_filename *smb_fname_cwd = NULL;
|
|
char *saved_dir = NULL;
|
|
TALLOC_CTX *ctx = talloc_tos();
|
|
NTSTATUS status = NT_STATUS_OK;
|
|
int ret;
|
|
|
|
status = create_synthetic_smb_fname(ctx, inherit_from_dir, NULL, NULL,
|
|
&smb_fname_parent);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
ret = SMB_VFS_STAT(conn, smb_fname_parent);
|
|
if (ret == -1) {
|
|
status = map_nt_error_from_unix(errno);
|
|
DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
|
|
"directory %s. Error was %s\n",
|
|
smb_fname_str_dbg(smb_fname_parent),
|
|
strerror(errno)));
|
|
goto out;
|
|
}
|
|
|
|
/* We've already done an lstat into psbuf, and we know it's a
|
|
directory. If we can cd into the directory and the dev/ino
|
|
are the same then we can safely chown without races as
|
|
we're locking the directory in place by being in it. This
|
|
should work on any UNIX (thanks tridge :-). JRA.
|
|
*/
|
|
|
|
saved_dir = vfs_GetWd(ctx,conn);
|
|
if (!saved_dir) {
|
|
status = map_nt_error_from_unix(errno);
|
|
DEBUG(0,("change_dir_owner_to_parent: failed to get "
|
|
"current working directory. Error was %s\n",
|
|
strerror(errno)));
|
|
goto out;
|
|
}
|
|
|
|
/* Chdir into the new path. */
|
|
if (vfs_ChDir(conn, fname) == -1) {
|
|
status = map_nt_error_from_unix(errno);
|
|
DEBUG(0,("change_dir_owner_to_parent: failed to change "
|
|
"current working directory to %s. Error "
|
|
"was %s\n", fname, strerror(errno) ));
|
|
goto chdir;
|
|
}
|
|
|
|
status = create_synthetic_smb_fname(ctx, ".", NULL, NULL,
|
|
&smb_fname_cwd);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
ret = SMB_VFS_STAT(conn, smb_fname_cwd);
|
|
if (ret == -1) {
|
|
status = map_nt_error_from_unix(errno);
|
|
DEBUG(0,("change_dir_owner_to_parent: failed to stat "
|
|
"directory '.' (%s) Error was %s\n",
|
|
fname, strerror(errno)));
|
|
goto chdir;
|
|
}
|
|
|
|
/* Ensure we're pointing at the same place. */
|
|
if (smb_fname_cwd->st.st_ex_dev != psbuf->st_ex_dev ||
|
|
smb_fname_cwd->st.st_ex_ino != psbuf->st_ex_ino) {
|
|
DEBUG(0,("change_dir_owner_to_parent: "
|
|
"device/inode on directory %s changed. "
|
|
"Refusing to chown !\n", fname ));
|
|
status = NT_STATUS_ACCESS_DENIED;
|
|
goto chdir;
|
|
}
|
|
|
|
if (smb_fname_parent->st.st_ex_uid == smb_fname_cwd->st.st_ex_uid) {
|
|
/* Already this uid - no need to change. */
|
|
DEBUG(10,("change_dir_owner_to_parent: directory %s "
|
|
"is already owned by uid %d\n",
|
|
fname,
|
|
(int)smb_fname_cwd->st.st_ex_uid ));
|
|
status = NT_STATUS_OK;
|
|
goto chdir;
|
|
}
|
|
|
|
become_root();
|
|
ret = SMB_VFS_LCHOWN(conn, ".", smb_fname_parent->st.st_ex_uid,
|
|
(gid_t)-1);
|
|
unbecome_root();
|
|
if (ret == -1) {
|
|
status = map_nt_error_from_unix(errno);
|
|
DEBUG(10,("change_dir_owner_to_parent: failed to chown "
|
|
"directory %s to parent directory uid %u. "
|
|
"Error was %s\n", fname,
|
|
(unsigned int)smb_fname_parent->st.st_ex_uid,
|
|
strerror(errno) ));
|
|
} else {
|
|
DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
|
|
"directory %s to parent directory uid %u.\n",
|
|
fname, (unsigned int)smb_fname_parent->st.st_ex_uid ));
|
|
/* Ensure the uid entry is updated. */
|
|
psbuf->st_ex_uid = smb_fname_parent->st.st_ex_uid;
|
|
}
|
|
|
|
chdir:
|
|
vfs_ChDir(conn,saved_dir);
|
|
out:
|
|
TALLOC_FREE(smb_fname_parent);
|
|
TALLOC_FREE(smb_fname_cwd);
|
|
return status;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Open a file.
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS open_file(files_struct *fsp,
|
|
connection_struct *conn,
|
|
struct smb_request *req,
|
|
const char *parent_dir,
|
|
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. */
|
|
{
|
|
struct smb_filename *smb_fname = fsp->fsp_name;
|
|
NTSTATUS status = NT_STATUS_OK;
|
|
int accmode = (flags & O_ACCMODE);
|
|
int local_flags = flags;
|
|
bool file_existed = VALID_STAT(fsp->fsp_name->st);
|
|
bool file_created = false;
|
|
|
|
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 || (flags & O_TRUNC) || (flags & O_APPEND)) {
|
|
DEBUG(3,("Permission denied opening %s\n",
|
|
smb_fname_str_dbg(smb_fname)));
|
|
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|O_EXCL);
|
|
local_flags &= ~(O_CREAT|O_EXCL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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", smb_fname_str_dbg(smb_fname)));
|
|
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(smb_fname->st.st_ex_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->base_name;
|
|
} else {
|
|
wild = smb_fname->base_name;
|
|
}
|
|
if ((local_flags & O_CREAT) && !file_existed &&
|
|
ms_has_wild(wild)) {
|
|
return NT_STATUS_OBJECT_NAME_INVALID;
|
|
}
|
|
|
|
/* Can we access this file ? */
|
|
if (!fsp->base_fsp) {
|
|
/* Only do this check on non-stream open. */
|
|
if (file_existed) {
|
|
status = smbd_check_access_rights(conn,
|
|
smb_fname,
|
|
access_mask);
|
|
} else if (local_flags & O_CREAT){
|
|
status = check_parent_access(conn,
|
|
smb_fname,
|
|
SEC_DIR_ADD_FILE,
|
|
NULL);
|
|
} else {
|
|
/* File didn't exist and no O_CREAT. */
|
|
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
|
|
}
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10,("open_file: "
|
|
"%s on file "
|
|
"%s returned %s\n",
|
|
file_existed ?
|
|
"smbd_check_access_rights" :
|
|
"check_parent_access",
|
|
smb_fname_str_dbg(smb_fname),
|
|
nt_errstr(status) ));
|
|
return status;
|
|
}
|
|
}
|
|
|
|
/* Actually do the open */
|
|
status = fd_open(conn, fsp, local_flags, unx_mode);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
|
|
"(flags=%d)\n", smb_fname_str_dbg(smb_fname),
|
|
nt_errstr(status),local_flags,flags));
|
|
return status;
|
|
}
|
|
|
|
if ((local_flags & O_CREAT) && !file_existed) {
|
|
file_created = true;
|
|
}
|
|
|
|
} else {
|
|
fsp->fh->fd = -1; /* What we used to call a stat open. */
|
|
if (!file_existed) {
|
|
/* File must exist for a stat open. */
|
|
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
|
|
}
|
|
|
|
status = smbd_check_access_rights(conn,
|
|
smb_fname,
|
|
access_mask);
|
|
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND) &&
|
|
fsp->posix_open &&
|
|
S_ISLNK(smb_fname->st.st_ex_mode)) {
|
|
/* This is a POSIX stat open for delete
|
|
* or rename on a symlink that points
|
|
* nowhere. Allow. */
|
|
DEBUG(10,("open_file: allowing POSIX "
|
|
"open on bad symlink %s\n",
|
|
smb_fname_str_dbg(smb_fname)));
|
|
status = NT_STATUS_OK;
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10,("open_file: "
|
|
"smbd_check_access_rights on file "
|
|
"%s returned %s\n",
|
|
smb_fname_str_dbg(smb_fname),
|
|
nt_errstr(status) ));
|
|
return status;
|
|
}
|
|
}
|
|
|
|
if (!file_existed) {
|
|
int ret;
|
|
|
|
if (fsp->fh->fd == -1) {
|
|
ret = SMB_VFS_STAT(conn, smb_fname);
|
|
} else {
|
|
ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
|
|
/* If we have an fd, this stat should succeed. */
|
|
if (ret == -1) {
|
|
DEBUG(0,("Error doing fstat on open file %s "
|
|
"(%s)\n",
|
|
smb_fname_str_dbg(smb_fname),
|
|
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;
|
|
}
|
|
|
|
if (file_created) {
|
|
bool need_re_stat = false;
|
|
/* Do all inheritance work after we've
|
|
done a successful stat call and filled
|
|
in the stat struct in fsp->fsp_name. */
|
|
|
|
/* Inherit the ACL if required */
|
|
if (lp_inherit_perms(SNUM(conn))) {
|
|
inherit_access_posix_acl(conn, parent_dir,
|
|
smb_fname->base_name,
|
|
unx_mode);
|
|
need_re_stat = true;
|
|
}
|
|
|
|
/* Change the owner if required. */
|
|
if (lp_inherit_owner(SNUM(conn))) {
|
|
change_file_owner_to_parent(conn, parent_dir,
|
|
fsp);
|
|
need_re_stat = true;
|
|
}
|
|
|
|
if (need_re_stat) {
|
|
if (fsp->fh->fd == -1) {
|
|
ret = SMB_VFS_STAT(conn, smb_fname);
|
|
} else {
|
|
ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
|
|
/* If we have an fd, this stat should succeed. */
|
|
if (ret == -1) {
|
|
DEBUG(0,("Error doing fstat on open file %s "
|
|
"(%s)\n",
|
|
smb_fname_str_dbg(smb_fname),
|
|
strerror(errno) ));
|
|
}
|
|
}
|
|
}
|
|
|
|
notify_fname(conn, NOTIFY_ACTION_ADDED,
|
|
FILE_NOTIFY_CHANGE_FILE_NAME,
|
|
smb_fname->base_name);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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(smb_fname->st.st_ex_mode)) {
|
|
fd_close(fsp);
|
|
errno = EISDIR;
|
|
return NT_STATUS_FILE_IS_A_DIRECTORY;
|
|
}
|
|
|
|
fsp->mode = smb_fname->st.st_ex_mode;
|
|
fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
|
|
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 = NULL;
|
|
fsp->modified = False;
|
|
fsp->sent_oplock_break = NO_BREAK_SENT;
|
|
fsp->is_directory = False;
|
|
if (conn->aio_write_behind_list &&
|
|
is_in_path(smb_fname->base_name, conn->aio_write_behind_list,
|
|
conn->case_sensitive)) {
|
|
fsp->aio_write_behind = True;
|
|
}
|
|
|
|
fsp->wcp = NULL; /* Write cache pointer. */
|
|
|
|
DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
|
|
conn->session_info->unix_info->unix_name,
|
|
smb_fname_str_dbg(smb_fname),
|
|
BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
|
|
conn->num_files_open));
|
|
|
|
errno = 0;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Check if we can open a file with a share mode.
|
|
Returns True if conflict, False if not.
|
|
****************************************************************************/
|
|
|
|
static bool share_conflict(struct share_mode_entry *entry,
|
|
uint32 access_mask,
|
|
uint32 share_access)
|
|
{
|
|
DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
|
|
"entry->share_access = 0x%x, "
|
|
"entry->private_options = 0x%x\n",
|
|
(unsigned int)entry->access_mask,
|
|
(unsigned int)entry->share_access,
|
|
(unsigned int)entry->private_options));
|
|
|
|
DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
|
|
(unsigned int)access_mask, (unsigned int)share_access));
|
|
|
|
if ((entry->access_mask & (FILE_WRITE_DATA|
|
|
FILE_APPEND_DATA|
|
|
FILE_READ_DATA|
|
|
FILE_EXECUTE|
|
|
DELETE_ACCESS)) == 0) {
|
|
DEBUG(10,("share_conflict: No conflict due to "
|
|
"entry->access_mask = 0x%x\n",
|
|
(unsigned int)entry->access_mask ));
|
|
return False;
|
|
}
|
|
|
|
if ((access_mask & (FILE_WRITE_DATA|
|
|
FILE_APPEND_DATA|
|
|
FILE_READ_DATA|
|
|
FILE_EXECUTE|
|
|
DELETE_ACCESS)) == 0) {
|
|
DEBUG(10,("share_conflict: No conflict due to "
|
|
"access_mask = 0x%x\n",
|
|
(unsigned int)access_mask ));
|
|
return False;
|
|
}
|
|
|
|
#if 1 /* JRA TEST - Superdebug. */
|
|
#define CHECK_MASK(num, am, right, sa, share) \
|
|
DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
|
|
(unsigned int)(num), (unsigned int)(am), \
|
|
(unsigned int)(right), (unsigned int)(am)&(right) )); \
|
|
DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
|
|
(unsigned int)(num), (unsigned int)(sa), \
|
|
(unsigned int)(share), (unsigned int)(sa)&(share) )); \
|
|
if (((am) & (right)) && !((sa) & (share))) { \
|
|
DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
|
|
sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
|
|
(unsigned int)(share) )); \
|
|
return True; \
|
|
}
|
|
#else
|
|
#define CHECK_MASK(num, am, right, sa, share) \
|
|
if (((am) & (right)) && !((sa) & (share))) { \
|
|
DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
|
|
sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
|
|
(unsigned int)(share) )); \
|
|
return True; \
|
|
}
|
|
#endif
|
|
|
|
CHECK_MASK(1, entry->access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
|
|
share_access, FILE_SHARE_WRITE);
|
|
CHECK_MASK(2, access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
|
|
entry->share_access, FILE_SHARE_WRITE);
|
|
|
|
CHECK_MASK(3, entry->access_mask, FILE_READ_DATA | FILE_EXECUTE,
|
|
share_access, FILE_SHARE_READ);
|
|
CHECK_MASK(4, access_mask, FILE_READ_DATA | FILE_EXECUTE,
|
|
entry->share_access, FILE_SHARE_READ);
|
|
|
|
CHECK_MASK(5, entry->access_mask, DELETE_ACCESS,
|
|
share_access, FILE_SHARE_DELETE);
|
|
CHECK_MASK(6, access_mask, DELETE_ACCESS,
|
|
entry->share_access, FILE_SHARE_DELETE);
|
|
|
|
DEBUG(10,("share_conflict: No conflict.\n"));
|
|
return False;
|
|
}
|
|
|
|
#if defined(DEVELOPER)
|
|
static void validate_my_share_entries(struct smbd_server_connection *sconn,
|
|
int num,
|
|
struct share_mode_entry *share_entry)
|
|
{
|
|
files_struct *fsp;
|
|
|
|
if (!procid_is_me(&share_entry->pid)) {
|
|
return;
|
|
}
|
|
|
|
if (is_deferred_open_entry(share_entry) &&
|
|
!open_was_deferred(sconn, share_entry->op_mid)) {
|
|
char *str = talloc_asprintf(talloc_tos(),
|
|
"Got a deferred entry without a request: "
|
|
"PANIC: %s\n",
|
|
share_mode_str(talloc_tos(), num, share_entry));
|
|
smb_panic(str);
|
|
}
|
|
|
|
if (!is_valid_share_mode_entry(share_entry)) {
|
|
return;
|
|
}
|
|
|
|
fsp = file_find_dif(sconn, share_entry->id,
|
|
share_entry->share_file_id);
|
|
if (!fsp) {
|
|
DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
|
|
share_mode_str(talloc_tos(), num, share_entry) ));
|
|
smb_panic("validate_my_share_entries: Cannot match a "
|
|
"share entry with an open file\n");
|
|
}
|
|
|
|
if (is_deferred_open_entry(share_entry)) {
|
|
goto panic;
|
|
}
|
|
|
|
if ((share_entry->op_type == NO_OPLOCK) &&
|
|
(fsp->oplock_type == FAKE_LEVEL_II_OPLOCK)) {
|
|
/* Someone has already written to it, but I haven't yet
|
|
* noticed */
|
|
return;
|
|
}
|
|
|
|
if (((uint16)fsp->oplock_type) != share_entry->op_type) {
|
|
goto panic;
|
|
}
|
|
|
|
return;
|
|
|
|
panic:
|
|
{
|
|
char *str;
|
|
DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
|
|
share_mode_str(talloc_tos(), num, share_entry) ));
|
|
str = talloc_asprintf(talloc_tos(),
|
|
"validate_my_share_entries: "
|
|
"file %s, oplock_type = 0x%x, op_type = 0x%x\n",
|
|
fsp->fsp_name->base_name,
|
|
(unsigned int)fsp->oplock_type,
|
|
(unsigned int)share_entry->op_type );
|
|
smb_panic(str);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
bool is_stat_open(uint32 access_mask)
|
|
{
|
|
return (access_mask &&
|
|
((access_mask & ~(SYNCHRONIZE_ACCESS| FILE_READ_ATTRIBUTES|
|
|
FILE_WRITE_ATTRIBUTES))==0) &&
|
|
((access_mask & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|
|
|
FILE_WRITE_ATTRIBUTES)) != 0));
|
|
}
|
|
|
|
/****************************************************************************
|
|
Deal with share modes
|
|
Invarient: Share mode must be locked on entry and exit.
|
|
Returns -1 on error, or number of share modes on success (may be zero).
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS open_mode_check(connection_struct *conn,
|
|
struct share_mode_lock *lck,
|
|
uint32_t name_hash,
|
|
uint32 access_mask,
|
|
uint32 share_access,
|
|
uint32 create_options,
|
|
bool *file_existed)
|
|
{
|
|
int i;
|
|
|
|
if(lck->data->num_share_modes == 0) {
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
*file_existed = True;
|
|
|
|
/* A delete on close prohibits everything */
|
|
|
|
if (is_delete_on_close_set(lck, name_hash)) {
|
|
return NT_STATUS_DELETE_PENDING;
|
|
}
|
|
|
|
if (is_stat_open(access_mask)) {
|
|
/* Stat open that doesn't trigger oplock breaks or share mode
|
|
* checks... ! JRA. */
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/*
|
|
* Check if the share modes will give us access.
|
|
*/
|
|
|
|
#if defined(DEVELOPER)
|
|
for(i = 0; i < lck->data->num_share_modes; i++) {
|
|
validate_my_share_entries(conn->sconn, i,
|
|
&lck->data->share_modes[i]);
|
|
}
|
|
#endif
|
|
|
|
if (!lp_share_modes(SNUM(conn))) {
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/* Now we check the share modes, after any oplock breaks. */
|
|
for(i = 0; i < lck->data->num_share_modes; i++) {
|
|
|
|
if (!is_valid_share_mode_entry(&lck->data->share_modes[i])) {
|
|
continue;
|
|
}
|
|
|
|
/* someone else has a share lock on it, check to see if we can
|
|
* too */
|
|
if (share_conflict(&lck->data->share_modes[i],
|
|
access_mask, share_access)) {
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static bool is_delete_request(files_struct *fsp) {
|
|
return ((fsp->access_mask == DELETE_ACCESS) &&
|
|
(fsp->oplock_type == NO_OPLOCK));
|
|
}
|
|
|
|
/*
|
|
* Send a break message to the oplock holder and delay the open for
|
|
* our client.
|
|
*/
|
|
|
|
static NTSTATUS send_break_message(files_struct *fsp,
|
|
struct share_mode_entry *exclusive,
|
|
uint64_t mid,
|
|
int oplock_request)
|
|
{
|
|
NTSTATUS status;
|
|
char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
|
|
|
|
DEBUG(10, ("Sending break request to PID %s\n",
|
|
procid_str_static(&exclusive->pid)));
|
|
exclusive->op_mid = mid;
|
|
|
|
/* Create the message. */
|
|
share_mode_entry_to_message(msg, exclusive);
|
|
|
|
/* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
|
|
don't want this set in the share mode struct pointed to by lck. */
|
|
|
|
if (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE) {
|
|
SSVAL(msg,OP_BREAK_MSG_OP_TYPE_OFFSET,
|
|
exclusive->op_type | FORCE_OPLOCK_BREAK_TO_NONE);
|
|
}
|
|
|
|
status = messaging_send_buf(fsp->conn->sconn->msg_ctx, exclusive->pid,
|
|
MSG_SMB_BREAK_REQUEST,
|
|
(uint8 *)msg,
|
|
MSG_SMB_SHARE_MODE_ENTRY_SIZE);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(3, ("Could not send oplock break message: %s\n",
|
|
nt_errstr(status)));
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Return share_mode_entry pointers for :
|
|
* 1). Batch oplock entry.
|
|
* 2). Batch or exclusive oplock entry (may be identical to #1).
|
|
* bool have_level2_oplock
|
|
* bool have_no_oplock.
|
|
* Do internal consistency checks on the share mode for a file.
|
|
*/
|
|
|
|
static void find_oplock_types(files_struct *fsp,
|
|
int oplock_request,
|
|
const struct share_mode_lock *lck,
|
|
struct share_mode_entry **pp_batch,
|
|
struct share_mode_entry **pp_ex_or_batch,
|
|
bool *got_level2,
|
|
bool *got_no_oplock)
|
|
{
|
|
int i;
|
|
|
|
*pp_batch = NULL;
|
|
*pp_ex_or_batch = NULL;
|
|
*got_level2 = false;
|
|
*got_no_oplock = false;
|
|
|
|
/* Ignore stat or internal opens, as is done in
|
|
delay_for_batch_oplocks() and
|
|
delay_for_exclusive_oplocks().
|
|
*/
|
|
if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
|
|
return;
|
|
}
|
|
|
|
for (i=0; i<lck->data->num_share_modes; i++) {
|
|
if (!is_valid_share_mode_entry(&lck->data->share_modes[i])) {
|
|
continue;
|
|
}
|
|
|
|
if (lck->data->share_modes[i].op_type == NO_OPLOCK &&
|
|
is_stat_open(lck->data->share_modes[i].access_mask)) {
|
|
/* We ignore stat opens in the table - they
|
|
always have NO_OPLOCK and never get or
|
|
cause breaks. JRA. */
|
|
continue;
|
|
}
|
|
|
|
if (BATCH_OPLOCK_TYPE(lck->data->share_modes[i].op_type)) {
|
|
/* batch - can only be one. */
|
|
if (*pp_ex_or_batch || *pp_batch || *got_level2 || *got_no_oplock) {
|
|
smb_panic("Bad batch oplock entry.");
|
|
}
|
|
*pp_batch = &lck->data->share_modes[i];
|
|
}
|
|
|
|
if (EXCLUSIVE_OPLOCK_TYPE(lck->data->share_modes[i].op_type)) {
|
|
/* Exclusive or batch - can only be one. */
|
|
if (*pp_ex_or_batch || *got_level2 || *got_no_oplock) {
|
|
smb_panic("Bad exclusive or batch oplock entry.");
|
|
}
|
|
*pp_ex_or_batch = &lck->data->share_modes[i];
|
|
}
|
|
|
|
if (LEVEL_II_OPLOCK_TYPE(lck->data->share_modes[i].op_type)) {
|
|
if (*pp_batch || *pp_ex_or_batch) {
|
|
smb_panic("Bad levelII oplock entry.");
|
|
}
|
|
*got_level2 = true;
|
|
}
|
|
|
|
if (lck->data->share_modes[i].op_type == NO_OPLOCK) {
|
|
if (*pp_batch || *pp_ex_or_batch) {
|
|
smb_panic("Bad no oplock entry.");
|
|
}
|
|
*got_no_oplock = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool delay_for_batch_oplocks(files_struct *fsp,
|
|
uint64_t mid,
|
|
int oplock_request,
|
|
struct share_mode_entry *batch_entry)
|
|
{
|
|
if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
|
|
return false;
|
|
}
|
|
if (batch_entry == NULL) {
|
|
return false;
|
|
}
|
|
|
|
/* Found a batch oplock */
|
|
send_break_message(fsp, batch_entry, mid, oplock_request);
|
|
return true;
|
|
}
|
|
|
|
static bool delay_for_exclusive_oplocks(files_struct *fsp,
|
|
uint64_t mid,
|
|
int oplock_request,
|
|
struct share_mode_entry *ex_entry)
|
|
{
|
|
bool delay_it;
|
|
|
|
if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
|
|
return false;
|
|
}
|
|
if (ex_entry == NULL) {
|
|
return false;
|
|
}
|
|
|
|
/* Found an exclusive or batch oplock */
|
|
|
|
delay_it = is_delete_request(fsp) ?
|
|
BATCH_OPLOCK_TYPE(ex_entry->op_type) : true;
|
|
|
|
if (!delay_it) {
|
|
return false;
|
|
}
|
|
|
|
send_break_message(fsp, ex_entry, mid, oplock_request);
|
|
return true;
|
|
}
|
|
|
|
static bool file_has_brlocks(files_struct *fsp)
|
|
{
|
|
struct byte_range_lock *br_lck;
|
|
|
|
br_lck = brl_get_locks_readonly(fsp);
|
|
if (!br_lck)
|
|
return false;
|
|
|
|
return br_lck->num_locks > 0 ? true : false;
|
|
}
|
|
|
|
static void grant_fsp_oplock_type(files_struct *fsp,
|
|
int oplock_request,
|
|
bool got_level2_oplock,
|
|
bool got_a_none_oplock)
|
|
{
|
|
bool allow_level2 = (global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
|
|
lp_level2_oplocks(SNUM(fsp->conn));
|
|
|
|
/* Start by granting what the client asked for,
|
|
but ensure no SAMBA_PRIVATE bits can be set. */
|
|
fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
|
|
|
|
if (oplock_request & INTERNAL_OPEN_ONLY) {
|
|
/* No oplocks on internal open. */
|
|
fsp->oplock_type = NO_OPLOCK;
|
|
DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
|
|
fsp->oplock_type, fsp_str_dbg(fsp)));
|
|
return;
|
|
} else if (lp_locking(fsp->conn->params) && file_has_brlocks(fsp)) {
|
|
DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
|
|
fsp_str_dbg(fsp)));
|
|
fsp->oplock_type = NO_OPLOCK;
|
|
}
|
|
|
|
if (is_stat_open(fsp->access_mask)) {
|
|
/* Leave the value already set. */
|
|
DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
|
|
fsp->oplock_type, fsp_str_dbg(fsp)));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Match what was requested (fsp->oplock_type) with
|
|
* what was found in the existing share modes.
|
|
*/
|
|
|
|
if (got_a_none_oplock) {
|
|
fsp->oplock_type = NO_OPLOCK;
|
|
} else if (got_level2_oplock) {
|
|
if (fsp->oplock_type == NO_OPLOCK ||
|
|
fsp->oplock_type == FAKE_LEVEL_II_OPLOCK) {
|
|
/* Store a level2 oplock, but don't tell the client */
|
|
fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
|
|
} else {
|
|
fsp->oplock_type = LEVEL_II_OPLOCK;
|
|
}
|
|
} else {
|
|
/* All share_mode_entries are placeholders or deferred.
|
|
* Silently upgrade to fake levelII if the client didn't
|
|
* ask for an oplock. */
|
|
if (fsp->oplock_type == NO_OPLOCK) {
|
|
/* Store a level2 oplock, but don't tell the client */
|
|
fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Don't grant level2 to clients that don't want them
|
|
* or if we've turned them off.
|
|
*/
|
|
if (fsp->oplock_type == LEVEL_II_OPLOCK && !allow_level2) {
|
|
fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
|
|
}
|
|
|
|
DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
|
|
fsp->oplock_type, fsp_str_dbg(fsp)));
|
|
}
|
|
|
|
bool request_timed_out(struct timeval request_time,
|
|
struct timeval timeout)
|
|
{
|
|
struct timeval now, end_time;
|
|
GetTimeOfDay(&now);
|
|
end_time = timeval_sum(&request_time, &timeout);
|
|
return (timeval_compare(&end_time, &now) < 0);
|
|
}
|
|
|
|
/****************************************************************************
|
|
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->data->num_share_modes; i++) {
|
|
struct share_mode_entry *e = &lck->data->share_modes[i];
|
|
|
|
if (is_deferred_open_entry(e) &&
|
|
procid_is_me(&e->pid) &&
|
|
(e->op_mid == req->mid)) {
|
|
DEBUG(0, ("Trying to defer an already deferred "
|
|
"request: mid=%llu, exiting\n",
|
|
(unsigned long long)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 %llu\n",
|
|
(unsigned int)request_time.tv_sec,
|
|
(unsigned int)request_time.tv_usec,
|
|
(unsigned long long)req->mid));
|
|
|
|
if (!push_deferred_open_message_smb(req, request_time, timeout,
|
|
state->id, (char *)state, sizeof(*state))) {
|
|
exit_server("push_deferred_open_message_smb failed");
|
|
}
|
|
add_deferred_open(lck, req->mid, request_time,
|
|
messaging_server_id(req->sconn->msg_ctx), state->id);
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
On overwrite open ensure that the attributes match.
|
|
****************************************************************************/
|
|
|
|
bool open_match_attributes(connection_struct *conn,
|
|
uint32 old_dos_attr,
|
|
uint32 new_dos_attr,
|
|
mode_t existing_unx_mode,
|
|
mode_t new_unx_mode,
|
|
mode_t *returned_unx_mode)
|
|
{
|
|
uint32 noarch_old_dos_attr, noarch_new_dos_attr;
|
|
|
|
noarch_old_dos_attr = (old_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
|
|
noarch_new_dos_attr = (new_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
|
|
|
|
if((noarch_old_dos_attr == 0 && noarch_new_dos_attr != 0) ||
|
|
(noarch_old_dos_attr != 0 && ((noarch_old_dos_attr & noarch_new_dos_attr) == noarch_old_dos_attr))) {
|
|
*returned_unx_mode = new_unx_mode;
|
|
} else {
|
|
*returned_unx_mode = (mode_t)0;
|
|
}
|
|
|
|
DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
|
|
"existing_unx_mode = 0%o, new_dos_attr = 0x%x "
|
|
"returned_unx_mode = 0%o\n",
|
|
(unsigned int)old_dos_attr,
|
|
(unsigned int)existing_unx_mode,
|
|
(unsigned int)new_dos_attr,
|
|
(unsigned int)*returned_unx_mode ));
|
|
|
|
/* If we're mapping SYSTEM and HIDDEN ensure they match. */
|
|
if (lp_map_system(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
|
|
if ((old_dos_attr & FILE_ATTRIBUTE_SYSTEM) &&
|
|
!(new_dos_attr & FILE_ATTRIBUTE_SYSTEM)) {
|
|
return False;
|
|
}
|
|
}
|
|
if (lp_map_hidden(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
|
|
if ((old_dos_attr & FILE_ATTRIBUTE_HIDDEN) &&
|
|
!(new_dos_attr & FILE_ATTRIBUTE_HIDDEN)) {
|
|
return False;
|
|
}
|
|
}
|
|
return True;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Special FCB or DOS processing in the case of a sharing violation.
|
|
Try and find a duplicated file handle.
|
|
****************************************************************************/
|
|
|
|
NTSTATUS fcb_or_dos_open(struct smb_request *req,
|
|
connection_struct *conn,
|
|
files_struct *fsp_to_dup_into,
|
|
const struct smb_filename *smb_fname,
|
|
struct file_id id,
|
|
uint16 file_pid,
|
|
uint16 vuid,
|
|
uint32 access_mask,
|
|
uint32 share_access,
|
|
uint32 create_options)
|
|
{
|
|
files_struct *fsp;
|
|
|
|
DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
|
|
"file %s.\n", smb_fname_str_dbg(smb_fname)));
|
|
|
|
for(fsp = file_find_di_first(conn->sconn, id); fsp;
|
|
fsp = file_find_di_next(fsp)) {
|
|
|
|
DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
|
|
"vuid = %u, file_pid = %u, private_options = 0x%x "
|
|
"access_mask = 0x%x\n", fsp_str_dbg(fsp),
|
|
fsp->fh->fd, (unsigned int)fsp->vuid,
|
|
(unsigned int)fsp->file_pid,
|
|
(unsigned int)fsp->fh->private_options,
|
|
(unsigned int)fsp->access_mask ));
|
|
|
|
if (fsp->fh->fd != -1 &&
|
|
fsp->vuid == vuid &&
|
|
fsp->file_pid == file_pid &&
|
|
(fsp->fh->private_options & (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS |
|
|
NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) &&
|
|
(fsp->access_mask & FILE_WRITE_DATA) &&
|
|
strequal(fsp->fsp_name->base_name, smb_fname->base_name) &&
|
|
strequal(fsp->fsp_name->stream_name,
|
|
smb_fname->stream_name)) {
|
|
DEBUG(10,("fcb_or_dos_open: file match\n"));
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!fsp) {
|
|
return NT_STATUS_NOT_FOUND;
|
|
}
|
|
|
|
/* quite an insane set of semantics ... */
|
|
if (is_executable(smb_fname->base_name) &&
|
|
(fsp->fh->private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS)) {
|
|
DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* We need to duplicate this fsp. */
|
|
return dup_file_fsp(req, fsp, access_mask, share_access,
|
|
create_options, fsp_to_dup_into);
|
|
}
|
|
|
|
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->data->id;
|
|
|
|
if (!request_timed_out(request_time, timeout)) {
|
|
defer_open(lck, request_time, timeout, req, &state);
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
Work out what access_mask to use from what the client sent us.
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS smbd_calculate_maximum_allowed_access(
|
|
connection_struct *conn,
|
|
const struct smb_filename *smb_fname,
|
|
uint32_t *p_access_mask)
|
|
{
|
|
struct security_descriptor *sd;
|
|
uint32_t access_granted;
|
|
NTSTATUS status;
|
|
|
|
if (get_current_uid(conn) == (uid_t)0) {
|
|
*p_access_mask |= FILE_GENERIC_ALL;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
|
|
(SECINFO_OWNER |
|
|
SECINFO_GROUP |
|
|
SECINFO_DACL),&sd);
|
|
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
|
|
/*
|
|
* File did not exist
|
|
*/
|
|
*p_access_mask = FILE_GENERIC_ALL;
|
|
return NT_STATUS_OK;
|
|
}
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10,("smbd_calculate_access_mask: "
|
|
"Could not get acl on file %s: %s\n",
|
|
smb_fname_str_dbg(smb_fname),
|
|
nt_errstr(status)));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
/*
|
|
* Never test FILE_READ_ATTRIBUTES. se_access_check()
|
|
* also takes care of owner WRITE_DAC and READ_CONTROL.
|
|
*/
|
|
status = se_access_check(sd,
|
|
get_current_nttok(conn),
|
|
(*p_access_mask & ~FILE_READ_ATTRIBUTES),
|
|
&access_granted);
|
|
|
|
TALLOC_FREE(sd);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("smbd_calculate_access_mask: "
|
|
"Access denied on file %s: "
|
|
"when calculating maximum access\n",
|
|
smb_fname_str_dbg(smb_fname)));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
*p_access_mask = (access_granted | FILE_READ_ATTRIBUTES);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
|
|
const struct smb_filename *smb_fname,
|
|
uint32_t access_mask,
|
|
uint32_t *access_mask_out)
|
|
{
|
|
NTSTATUS status;
|
|
uint32_t orig_access_mask = access_mask;
|
|
uint32_t rejected_share_access;
|
|
|
|
/*
|
|
* Convert GENERIC bits to specific bits.
|
|
*/
|
|
|
|
se_map_generic(&access_mask, &file_generic_mapping);
|
|
|
|
/* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
|
|
if (access_mask & MAXIMUM_ALLOWED_ACCESS) {
|
|
|
|
status = smbd_calculate_maximum_allowed_access(
|
|
conn, smb_fname, &access_mask);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
access_mask &= conn->share_access;
|
|
}
|
|
|
|
rejected_share_access = access_mask & ~(conn->share_access);
|
|
|
|
if (rejected_share_access) {
|
|
DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
|
|
"file %s: rejected by share access mask[0x%08X] "
|
|
"orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
|
|
smb_fname_str_dbg(smb_fname),
|
|
conn->share_access,
|
|
orig_access_mask, access_mask,
|
|
rejected_share_access));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
*access_mask_out = access_mask;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Remove the deferred open entry under lock.
|
|
****************************************************************************/
|
|
|
|
void remove_deferred_open_entry(struct file_id id, uint64_t mid,
|
|
struct server_id pid)
|
|
{
|
|
struct share_mode_lock *lck = get_share_mode_lock(talloc_tos(), id);
|
|
if (lck == NULL) {
|
|
DEBUG(0, ("could not get share mode lock\n"));
|
|
return;
|
|
}
|
|
del_deferred_open_entry(lck, mid, pid);
|
|
TALLOC_FREE(lck);
|
|
}
|
|
|
|
/****************************************************************************
|
|
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,
|
|
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.) */
|
|
uint32_t private_flags, /* Samba specific flags. */
|
|
int *pinfo,
|
|
files_struct *fsp)
|
|
{
|
|
struct smb_filename *smb_fname = fsp->fsp_name;
|
|
int flags=0;
|
|
int flags2=0;
|
|
bool file_existed = VALID_STAT(smb_fname->st);
|
|
bool def_acl = False;
|
|
bool posix_open = False;
|
|
bool new_file_created = False;
|
|
bool clear_ads = false;
|
|
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 timeval request_time = timeval_zero();
|
|
struct share_mode_lock *lck = NULL;
|
|
uint32 open_access_mask = access_mask;
|
|
NTSTATUS status;
|
|
char *parent_dir;
|
|
|
|
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",
|
|
smb_fname_str_dbg(smb_fname)));
|
|
|
|
if (!req) {
|
|
DEBUG(0,("open_file_ntcreate: printer open without "
|
|
"an SMB request!\n"));
|
|
return NT_STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
return print_spool_open(fsp, smb_fname->base_name,
|
|
req->vuid);
|
|
}
|
|
|
|
if (!parent_dirname(talloc_tos(), smb_fname->base_name, &parent_dir,
|
|
NULL)) {
|
|
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 {
|
|
/* Windows allows a new file to be created and
|
|
silently removes a FILE_ATTRIBUTE_DIRECTORY
|
|
sent by the client. Do the same. */
|
|
|
|
new_dos_attributes &= ~FILE_ATTRIBUTE_DIRECTORY;
|
|
|
|
/* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
|
|
* created new. */
|
|
unx_mode = unix_mode(conn, new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
|
|
smb_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 private_flags = 0x%x\n",
|
|
smb_fname_str_dbg(smb_fname), new_dos_attributes,
|
|
access_mask, share_access, create_disposition,
|
|
create_options, (unsigned int)unx_mode, oplock_request,
|
|
(unsigned int)private_flags));
|
|
|
|
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) {
|
|
void *ptr;
|
|
if (get_deferred_open_message_state(req,
|
|
&request_time,
|
|
&ptr)) {
|
|
|
|
struct deferred_open_record *state = (struct deferred_open_record *)ptr;
|
|
/* Remember the absolute time of the original
|
|
request with this mid. We'll use it later to
|
|
see if this has timed out. */
|
|
|
|
/* Remove the deferred open entry under lock. */
|
|
remove_deferred_open_entry(
|
|
state->id, req->mid,
|
|
messaging_server_id(req->sconn->msg_ctx));
|
|
|
|
/* Ensure we don't reprocess this message. */
|
|
remove_deferred_open_message_smb(req->sconn, req->mid);
|
|
}
|
|
}
|
|
|
|
if (!posix_open) {
|
|
new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
|
|
if (file_existed) {
|
|
existing_dos_attributes = dos_mode(conn, smb_fname);
|
|
}
|
|
}
|
|
|
|
/* ignore any oplock requests if oplocks are disabled */
|
|
if (!lp_oplocks(SNUM(conn)) ||
|
|
IS_VETO_OPLOCK_PATH(conn, smb_fname->base_name)) {
|
|
/* 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(smb_fname->base_name,".+,;=[].")) {
|
|
/* 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);
|
|
clear_ads = true;
|
|
break;
|
|
|
|
case FILE_OVERWRITE_IF:
|
|
/* If file exists replace/overwrite. If file doesn't
|
|
* exist create. */
|
|
flags2 |= (O_CREAT | O_TRUNC);
|
|
clear_ads = true;
|
|
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",
|
|
smb_fname_str_dbg(smb_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",
|
|
smb_fname_str_dbg(smb_fname) ));
|
|
errno = ENOENT;
|
|
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
|
|
}
|
|
flags2 |= O_TRUNC;
|
|
clear_ads = true;
|
|
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",
|
|
smb_fname_str_dbg(smb_fname)));
|
|
if (S_ISDIR(smb_fname->st.st_ex_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, existing_dos_attributes,
|
|
new_dos_attributes,
|
|
smb_fname->st.st_ex_mode,
|
|
unx_mode, &new_unx_mode)) {
|
|
DEBUG(5,("open_file_ntcreate: attributes missmatch "
|
|
"for file %s (%x %x) (0%o, 0%o)\n",
|
|
smb_fname_str_dbg(smb_fname),
|
|
existing_dos_attributes,
|
|
new_dos_attributes,
|
|
(unsigned int)smb_fname->st.st_ex_mode,
|
|
(unsigned int)unx_mode ));
|
|
errno = EACCES;
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
}
|
|
|
|
status = smbd_calculate_access_mask(conn, smb_fname,
|
|
access_mask,
|
|
&access_mask);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
|
|
"on file %s returned %s\n",
|
|
smb_fname_str_dbg(smb_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", smb_fname_str_dbg(smb_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 ((private_flags & 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",
|
|
smb_fname_str_dbg(smb_fname),
|
|
!CAN_WRITE(conn) ? "share" : "file" ));
|
|
errno = EACCES;
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
|
|
fsp->share_access = share_access;
|
|
fsp->fh->private_options = private_flags;
|
|
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 share_mode_entry *batch_entry = NULL;
|
|
struct share_mode_entry *exclusive_entry = NULL;
|
|
bool got_level2_oplock = false;
|
|
bool got_a_none_oplock = false;
|
|
struct file_id id;
|
|
|
|
struct timespec old_write_time = smb_fname->st.st_ex_mtime;
|
|
id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
|
|
|
|
lck = get_share_mode_lock_fresh(talloc_tos(), id,
|
|
conn->connectpath,
|
|
smb_fname, &old_write_time);
|
|
if (lck == NULL) {
|
|
DEBUG(0, ("Could not get share mode lock\n"));
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
|
|
/* Get the types we need to examine. */
|
|
find_oplock_types(fsp,
|
|
oplock_request,
|
|
lck,
|
|
&batch_entry,
|
|
&exclusive_entry,
|
|
&got_level2_oplock,
|
|
&got_a_none_oplock);
|
|
|
|
/* First pass - send break only on batch oplocks. */
|
|
if ((req != NULL) &&
|
|
delay_for_batch_oplocks(fsp,
|
|
req->mid,
|
|
oplock_request,
|
|
batch_entry)) {
|
|
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, lck, fsp->name_hash,
|
|
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_exclusive_oplocks(
|
|
fsp,
|
|
req->mid,
|
|
oplock_request,
|
|
exclusive_entry)) {
|
|
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;
|
|
}
|
|
|
|
grant_fsp_oplock_type(fsp,
|
|
oplock_request,
|
|
got_level2_oplock,
|
|
got_a_none_oplock);
|
|
|
|
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 (private_flags &
|
|
(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,
|
|
smb_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)) ||
|
|
!NT_STATUS_IS_OK(smbd_check_access_rights(conn,
|
|
smb_fname, 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 & lp_create_mask(SNUM(conn)));
|
|
}
|
|
|
|
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,
|
|
flags|flags2, unx_mode, access_mask,
|
|
open_access_mask);
|
|
|
|
if (!NT_STATUS_IS_OK(fsp_open)) {
|
|
TALLOC_FREE(lck);
|
|
return fsp_open;
|
|
}
|
|
|
|
if (!file_existed) {
|
|
struct share_mode_entry *batch_entry = NULL;
|
|
struct share_mode_entry *exclusive_entry = NULL;
|
|
bool got_level2_oplock = false;
|
|
bool got_a_none_oplock = false;
|
|
struct timespec old_write_time = smb_fname->st.st_ex_mtime;
|
|
struct file_id id;
|
|
/*
|
|
* 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_fresh(talloc_tos(), id,
|
|
conn->connectpath,
|
|
smb_fname, &old_write_time);
|
|
|
|
if (lck == NULL) {
|
|
DEBUG(0, ("open_file_ntcreate: Could not get share "
|
|
"mode lock for %s\n",
|
|
smb_fname_str_dbg(smb_fname)));
|
|
fd_close(fsp);
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
|
|
/* Get the types we need to examine. */
|
|
find_oplock_types(fsp,
|
|
oplock_request,
|
|
lck,
|
|
&batch_entry,
|
|
&exclusive_entry,
|
|
&got_level2_oplock,
|
|
&got_a_none_oplock);
|
|
|
|
/* First pass - send break only on batch oplocks. */
|
|
if ((req != NULL) &&
|
|
delay_for_batch_oplocks(fsp,
|
|
req->mid,
|
|
oplock_request,
|
|
batch_entry)) {
|
|
schedule_defer_open(lck, request_time, req);
|
|
TALLOC_FREE(lck);
|
|
fd_close(fsp);
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
|
|
status = open_mode_check(conn, lck, fsp->name_hash,
|
|
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_exclusive_oplocks(
|
|
fsp,
|
|
req->mid,
|
|
oplock_request,
|
|
exclusive_entry)) {
|
|
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;
|
|
|
|
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);
|
|
fd_close(fsp);
|
|
return status;
|
|
}
|
|
|
|
grant_fsp_oplock_type(fsp,
|
|
oplock_request,
|
|
got_level2_oplock,
|
|
got_a_none_oplock);
|
|
|
|
/*
|
|
* We exit this block with the share entry *locked*.....
|
|
*/
|
|
|
|
}
|
|
|
|
SMB_ASSERT(lck != NULL);
|
|
|
|
/* Delete streams if create_disposition requires it */
|
|
if (file_existed && clear_ads &&
|
|
!is_ntfs_stream_smb_fname(smb_fname)) {
|
|
status = delete_all_streams(conn, smb_fname->base_name);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(lck);
|
|
fd_close(fsp);
|
|
return status;
|
|
}
|
|
}
|
|
|
|
/* 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) {
|
|
int ret_flock;
|
|
ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access, access_mask);
|
|
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 (file_existed && (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, &smb_fname->st)==-1)) {
|
|
status = map_nt_error_from_unix(errno);
|
|
TALLOC_FREE(lck);
|
|
fd_close(fsp);
|
|
return status;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
|
|
* but we don't have to store this - just ignore it on access check.
|
|
*/
|
|
if (conn->sconn->using_smb2) {
|
|
/*
|
|
* SMB2 doesn't return it (according to Microsoft tests).
|
|
* Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
|
|
* File created with access = 0x7 (Read, Write, Delete)
|
|
* Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
|
|
*/
|
|
fsp->access_mask = access_mask;
|
|
} else {
|
|
/* But SMB1 does. */
|
|
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_OVERWRITTEN;
|
|
} else {
|
|
info = FILE_WAS_OPENED;
|
|
}
|
|
} else {
|
|
info = FILE_WAS_CREATED;
|
|
}
|
|
|
|
if (pinfo) {
|
|
*pinfo = info;
|
|
}
|
|
|
|
/*
|
|
* Setup the oplock info in both the shared memory and
|
|
* file structs.
|
|
*/
|
|
|
|
if (!set_file_oplock(fsp, fsp->oplock_type)) {
|
|
/*
|
|
* Could not get the kernel oplock or there are byte-range
|
|
* locks on the file.
|
|
*/
|
|
fsp->oplock_type = NO_OPLOCK;
|
|
}
|
|
|
|
set_share_mode(lck, fsp, get_current_uid(conn),
|
|
req ? req->mid : 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, 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 (info == FILE_WAS_OVERWRITTEN
|
|
|| info == FILE_WAS_CREATED
|
|
|| info == FILE_WAS_SUPERSEDED) {
|
|
new_file_created = 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) {
|
|
if (file_set_dosmode(conn, smb_fname,
|
|
new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
|
|
parent_dir, true) == 0) {
|
|
unx_mode = smb_fname->st.st_ex_mode;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Determine sparse flag. */
|
|
if (posix_open) {
|
|
/* POSIX opens are sparse by default. */
|
|
fsp->is_sparse = true;
|
|
} else {
|
|
fsp->is_sparse = (file_existed &&
|
|
(existing_dos_attributes & FILE_ATTRIBUTE_SPARSE));
|
|
}
|
|
|
|
/*
|
|
* 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",
|
|
smb_fname_str_dbg(smb_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",
|
|
smb_fname_str_dbg(smb_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,
|
|
messaging_server_id(req->sconn->msg_ctx));
|
|
}
|
|
TALLOC_FREE(lck);
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
Open a file for for write to ensure that we can fchmod it.
|
|
****************************************************************************/
|
|
|
|
NTSTATUS open_file_fchmod(connection_struct *conn,
|
|
struct smb_filename *smb_fname,
|
|
files_struct **result)
|
|
{
|
|
if (!VALID_STAT(smb_fname->st)) {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
return SMB_VFS_CREATE_FILE(
|
|
conn, /* conn */
|
|
NULL, /* req */
|
|
0, /* root_dir_fid */
|
|
smb_fname, /* fname */
|
|
FILE_WRITE_DATA, /* access_mask */
|
|
(FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
|
|
FILE_SHARE_DELETE),
|
|
FILE_OPEN, /* create_disposition*/
|
|
0, /* create_options */
|
|
0, /* file_attributes */
|
|
INTERNAL_OPEN_ONLY, /* oplock_request */
|
|
0, /* allocation_size */
|
|
0, /* private_flags */
|
|
NULL, /* sd */
|
|
NULL, /* ea_list */
|
|
result, /* result */
|
|
NULL); /* pinfo */
|
|
}
|
|
|
|
static NTSTATUS mkdir_internal(connection_struct *conn,
|
|
struct smb_filename *smb_dname,
|
|
uint32 file_attributes)
|
|
{
|
|
mode_t mode;
|
|
char *parent_dir = NULL;
|
|
NTSTATUS status;
|
|
bool posix_open = false;
|
|
bool need_re_stat = false;
|
|
uint32_t access_mask = SEC_DIR_ADD_SUBDIR;
|
|
|
|
if(access_mask & ~(conn->share_access)) {
|
|
DEBUG(5,("mkdir_internal: failing share access "
|
|
"%s\n", lp_servicename(SNUM(conn))));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
if (!parent_dirname(talloc_tos(), smb_dname->base_name, &parent_dir,
|
|
NULL)) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
|
|
posix_open = true;
|
|
mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
|
|
} else {
|
|
mode = unix_mode(conn, FILE_ATTRIBUTE_DIRECTORY, smb_dname, parent_dir);
|
|
}
|
|
|
|
status = check_parent_access(conn,
|
|
smb_dname,
|
|
access_mask,
|
|
&parent_dir);
|
|
if(!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(5,("mkdir_internal: check_parent_access "
|
|
"on directory %s for path %s returned %s\n",
|
|
parent_dir,
|
|
smb_dname->base_name,
|
|
nt_errstr(status) ));
|
|
return status;
|
|
}
|
|
|
|
if (SMB_VFS_MKDIR(conn, smb_dname->base_name, mode) != 0) {
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
|
|
/* Ensure we're checking for a symlink here.... */
|
|
/* We don't want to get caught by a symlink racer. */
|
|
|
|
if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
|
|
DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
|
|
smb_fname_str_dbg(smb_dname), strerror(errno)));
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
|
|
if (!S_ISDIR(smb_dname->st.st_ex_mode)) {
|
|
DEBUG(0, ("Directory '%s' just created is not a directory !\n",
|
|
smb_fname_str_dbg(smb_dname)));
|
|
return NT_STATUS_NOT_A_DIRECTORY;
|
|
}
|
|
|
|
if (lp_store_dos_attributes(SNUM(conn))) {
|
|
if (!posix_open) {
|
|
file_set_dosmode(conn, smb_dname,
|
|
file_attributes | FILE_ATTRIBUTE_DIRECTORY,
|
|
parent_dir, true);
|
|
}
|
|
}
|
|
|
|
if (lp_inherit_perms(SNUM(conn))) {
|
|
inherit_access_posix_acl(conn, parent_dir,
|
|
smb_dname->base_name, mode);
|
|
need_re_stat = true;
|
|
}
|
|
|
|
if (!posix_open) {
|
|
/*
|
|
* Check if high bits should have been set,
|
|
* then (if bits are missing): add them.
|
|
* Consider bits automagically set by UNIX, i.e. SGID bit from parent
|
|
* dir.
|
|
*/
|
|
if ((mode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) &&
|
|
(mode & ~smb_dname->st.st_ex_mode)) {
|
|
SMB_VFS_CHMOD(conn, smb_dname->base_name,
|
|
(smb_dname->st.st_ex_mode |
|
|
(mode & ~smb_dname->st.st_ex_mode)));
|
|
need_re_stat = true;
|
|
}
|
|
}
|
|
|
|
/* Change the owner if required. */
|
|
if (lp_inherit_owner(SNUM(conn))) {
|
|
change_dir_owner_to_parent(conn, parent_dir,
|
|
smb_dname->base_name,
|
|
&smb_dname->st);
|
|
need_re_stat = true;
|
|
}
|
|
|
|
if (need_re_stat) {
|
|
if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
|
|
DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
|
|
smb_fname_str_dbg(smb_dname), strerror(errno)));
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
}
|
|
|
|
notify_fname(conn, NOTIFY_ACTION_ADDED, FILE_NOTIFY_CHANGE_DIR_NAME,
|
|
smb_dname->base_name);
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Ensure we didn't get symlink raced on opening a directory.
|
|
****************************************************************************/
|
|
|
|
bool check_same_stat(const SMB_STRUCT_STAT *sbuf1,
|
|
const SMB_STRUCT_STAT *sbuf2)
|
|
{
|
|
if (sbuf1->st_ex_uid != sbuf2->st_ex_uid ||
|
|
sbuf1->st_ex_gid != sbuf2->st_ex_gid ||
|
|
sbuf1->st_ex_dev != sbuf2->st_ex_dev ||
|
|
sbuf1->st_ex_ino != sbuf2->st_ex_ino) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Open a directory from an NT SMB call.
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS open_directory(connection_struct *conn,
|
|
struct smb_request *req,
|
|
struct smb_filename *smb_dname,
|
|
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(smb_dname->st) ? True : False;
|
|
struct share_mode_lock *lck = NULL;
|
|
NTSTATUS status;
|
|
struct timespec mtimespec;
|
|
int info = 0;
|
|
|
|
SMB_ASSERT(!is_ntfs_stream_smb_fname(smb_dname));
|
|
|
|
/* Ensure we have a directory attribute. */
|
|
file_attributes |= FILE_ATTRIBUTE_DIRECTORY;
|
|
|
|
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",
|
|
smb_fname_str_dbg(smb_dname),
|
|
(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_smb_fname(smb_dname)) {
|
|
DEBUG(2, ("open_directory: %s is a stream name!\n",
|
|
smb_fname_str_dbg(smb_dname)));
|
|
return NT_STATUS_NOT_A_DIRECTORY;
|
|
}
|
|
|
|
status = smbd_calculate_access_mask(conn, smb_dname,
|
|
access_mask, &access_mask);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("open_directory: smbd_calculate_access_mask "
|
|
"on file %s returned %s\n",
|
|
smb_fname_str_dbg(smb_dname),
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
|
|
!security_token_has_privilege(get_current_nttok(conn),
|
|
SEC_PRIV_SECURITY)) {
|
|
DEBUG(10, ("open_directory: open on %s "
|
|
"failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
|
|
smb_fname_str_dbg(smb_dname)));
|
|
return NT_STATUS_PRIVILEGE_NOT_HELD;
|
|
}
|
|
|
|
switch( create_disposition ) {
|
|
case FILE_OPEN:
|
|
|
|
if (!dir_existed) {
|
|
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
|
|
}
|
|
|
|
info = FILE_WAS_OPENED;
|
|
break;
|
|
|
|
case FILE_CREATE:
|
|
|
|
/* If directory exists error. If directory doesn't
|
|
* exist create. */
|
|
|
|
if (dir_existed) {
|
|
status = NT_STATUS_OBJECT_NAME_COLLISION;
|
|
DEBUG(2, ("open_directory: unable to create "
|
|
"%s. Error was %s\n",
|
|
smb_fname_str_dbg(smb_dname),
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
status = mkdir_internal(conn, smb_dname,
|
|
file_attributes);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(2, ("open_directory: unable to create "
|
|
"%s. Error was %s\n",
|
|
smb_fname_str_dbg(smb_dname),
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
info = FILE_WAS_CREATED;
|
|
break;
|
|
|
|
case FILE_OPEN_IF:
|
|
/*
|
|
* If directory exists open. If directory doesn't
|
|
* exist create.
|
|
*/
|
|
|
|
if (dir_existed) {
|
|
status = NT_STATUS_OK;
|
|
info = FILE_WAS_OPENED;
|
|
} else {
|
|
status = mkdir_internal(conn, smb_dname,
|
|
file_attributes);
|
|
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
info = FILE_WAS_CREATED;
|
|
} else {
|
|
/* Cope with create race. */
|
|
if (!NT_STATUS_EQUAL(status,
|
|
NT_STATUS_OBJECT_NAME_COLLISION)) {
|
|
DEBUG(2, ("open_directory: unable to create "
|
|
"%s. Error was %s\n",
|
|
smb_fname_str_dbg(smb_dname),
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
info = FILE_WAS_OPENED;
|
|
}
|
|
}
|
|
|
|
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,
|
|
smb_fname_str_dbg(smb_dname)));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if(!S_ISDIR(smb_dname->st.st_ex_mode)) {
|
|
DEBUG(5,("open_directory: %s is not a directory !\n",
|
|
smb_fname_str_dbg(smb_dname)));
|
|
return NT_STATUS_NOT_A_DIRECTORY;
|
|
}
|
|
|
|
if (info == FILE_WAS_OPENED) {
|
|
status = smbd_check_access_rights(conn, smb_dname, access_mask);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("open_directory: smbd_check_access_rights on "
|
|
"file %s failed with %s\n",
|
|
smb_fname_str_dbg(smb_dname),
|
|
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 = smb_dname->st.st_ex_mode;
|
|
fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_dname->st);
|
|
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 = 0;
|
|
/*
|
|
* According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
|
|
*/
|
|
fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
|
|
fsp->print_file = NULL;
|
|
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;
|
|
status = fsp_set_smb_fname(fsp, smb_dname);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
file_free(req, fsp);
|
|
return status;
|
|
}
|
|
|
|
mtimespec = smb_dname->st.st_ex_mtime;
|
|
|
|
#ifdef O_DIRECTORY
|
|
status = fd_open(conn, fsp, O_RDONLY|O_DIRECTORY, 0);
|
|
#else
|
|
/* POSIX allows us to open a directory with O_RDONLY. */
|
|
status = fd_open(conn, fsp, O_RDONLY, 0);
|
|
#endif
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(5, ("open_directory: Could not open fd for "
|
|
"%s (%s)\n",
|
|
smb_fname_str_dbg(smb_dname),
|
|
nt_errstr(status)));
|
|
file_free(req, fsp);
|
|
return status;
|
|
}
|
|
|
|
status = vfs_stat_fsp(fsp);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
fd_close(fsp);
|
|
file_free(req, fsp);
|
|
return status;
|
|
}
|
|
|
|
/* Ensure there was no race condition. */
|
|
if (!check_same_stat(&smb_dname->st, &fsp->fsp_name->st)) {
|
|
DEBUG(5,("open_directory: stat struct differs for "
|
|
"directory %s.\n",
|
|
smb_fname_str_dbg(smb_dname)));
|
|
fd_close(fsp);
|
|
file_free(req, fsp);
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
lck = get_share_mode_lock_fresh(talloc_tos(), fsp->file_id,
|
|
conn->connectpath, smb_dname,
|
|
&mtimespec);
|
|
|
|
if (lck == NULL) {
|
|
DEBUG(0, ("open_directory: Could not get share mode lock for "
|
|
"%s\n", smb_fname_str_dbg(smb_dname)));
|
|
fd_close(fsp);
|
|
file_free(req, fsp);
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
|
|
status = open_mode_check(conn, lck, fsp->name_hash,
|
|
access_mask, share_access,
|
|
create_options, &dir_existed);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(lck);
|
|
fd_close(fsp);
|
|
file_free(req, fsp);
|
|
return status;
|
|
}
|
|
|
|
set_share_mode(lck, fsp, get_current_uid(conn),
|
|
req ? req->mid : 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, 0);
|
|
if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
|
|
TALLOC_FREE(lck);
|
|
fd_close(fsp);
|
|
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;
|
|
}
|
|
|
|
NTSTATUS create_directory(connection_struct *conn, struct smb_request *req,
|
|
struct smb_filename *smb_dname)
|
|
{
|
|
NTSTATUS status;
|
|
files_struct *fsp;
|
|
|
|
status = SMB_VFS_CREATE_FILE(
|
|
conn, /* conn */
|
|
req, /* req */
|
|
0, /* root_dir_fid */
|
|
smb_dname, /* fname */
|
|
FILE_READ_ATTRIBUTES, /* access_mask */
|
|
FILE_SHARE_NONE, /* share_access */
|
|
FILE_CREATE, /* create_disposition*/
|
|
FILE_DIRECTORY_FILE, /* create_options */
|
|
FILE_ATTRIBUTE_DIRECTORY, /* file_attributes */
|
|
0, /* oplock_request */
|
|
0, /* allocation_size */
|
|
0, /* private_flags */
|
|
NULL, /* sd */
|
|
NULL, /* ea_list */
|
|
&fsp, /* result */
|
|
NULL); /* pinfo */
|
|
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
close_file(req, fsp, NORMAL_CLOSE);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Receive notification that one of our open files has been renamed by another
|
|
smbd process.
|
|
****************************************************************************/
|
|
|
|
void msg_file_was_renamed(struct messaging_context *msg,
|
|
void *private_data,
|
|
uint32_t msg_type,
|
|
struct server_id server_id,
|
|
DATA_BLOB *data)
|
|
{
|
|
files_struct *fsp;
|
|
char *frm = (char *)data->data;
|
|
struct file_id id;
|
|
const char *sharepath;
|
|
const char *base_name;
|
|
const char *stream_name;
|
|
struct smb_filename *smb_fname = NULL;
|
|
size_t sp_len, bn_len;
|
|
NTSTATUS status;
|
|
struct smbd_server_connection *sconn =
|
|
talloc_get_type_abort(private_data,
|
|
struct smbd_server_connection);
|
|
|
|
if (data->data == NULL
|
|
|| data->length < MSG_FILE_RENAMED_MIN_SIZE + 2) {
|
|
DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
|
|
(int)data->length));
|
|
return;
|
|
}
|
|
|
|
/* Unpack the message. */
|
|
pull_file_id_24(frm, &id);
|
|
sharepath = &frm[24];
|
|
sp_len = strlen(sharepath);
|
|
base_name = sharepath + sp_len + 1;
|
|
bn_len = strlen(base_name);
|
|
stream_name = sharepath + sp_len + 1 + bn_len + 1;
|
|
|
|
/* stream_name must always be NULL if there is no stream. */
|
|
if (stream_name[0] == '\0') {
|
|
stream_name = NULL;
|
|
}
|
|
|
|
status = create_synthetic_smb_fname(talloc_tos(), base_name,
|
|
stream_name, NULL, &smb_fname);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return;
|
|
}
|
|
|
|
DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
|
|
"file_id %s\n",
|
|
sharepath, smb_fname_str_dbg(smb_fname),
|
|
file_id_string_tos(&id)));
|
|
|
|
for(fsp = file_find_di_first(sconn, id); fsp;
|
|
fsp = file_find_di_next(fsp)) {
|
|
if (memcmp(fsp->conn->connectpath, sharepath, sp_len) == 0) {
|
|
|
|
DEBUG(10,("msg_file_was_renamed: renaming file fnum %d from %s -> %s\n",
|
|
fsp->fnum, fsp_str_dbg(fsp),
|
|
smb_fname_str_dbg(smb_fname)));
|
|
status = fsp_set_smb_fname(fsp, smb_fname);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto out;
|
|
}
|
|
} else {
|
|
/* TODO. JRA. */
|
|
/* Now we have the complete path we can work out if this is
|
|
actually within this share and adjust newname accordingly. */
|
|
DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
|
|
"not sharepath %s) "
|
|
"fnum %d from %s -> %s\n",
|
|
fsp->conn->connectpath,
|
|
sharepath,
|
|
fsp->fnum,
|
|
fsp_str_dbg(fsp),
|
|
smb_fname_str_dbg(smb_fname)));
|
|
}
|
|
}
|
|
out:
|
|
TALLOC_FREE(smb_fname);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
NTSTATUS open_streams_for_delete(connection_struct *conn,
|
|
const char *fname)
|
|
{
|
|
struct stream_struct *stream_info = NULL;
|
|
files_struct **streams = NULL;
|
|
int i;
|
|
unsigned int num_streams = 0;
|
|
TALLOC_CTX *frame = talloc_stackframe();
|
|
NTSTATUS status;
|
|
|
|
status = 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, ("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++) {
|
|
struct smb_filename *smb_fname = NULL;
|
|
|
|
if (strequal(stream_info[i].name, "::$DATA")) {
|
|
streams[i] = NULL;
|
|
continue;
|
|
}
|
|
|
|
status = create_synthetic_smb_fname(talloc_tos(), fname,
|
|
stream_info[i].name,
|
|
NULL, &smb_fname);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
if (SMB_VFS_STAT(conn, smb_fname) == -1) {
|
|
DEBUG(10, ("Unable to stat stream: %s\n",
|
|
smb_fname_str_dbg(smb_fname)));
|
|
}
|
|
|
|
status = SMB_VFS_CREATE_FILE(
|
|
conn, /* conn */
|
|
NULL, /* req */
|
|
0, /* root_dir_fid */
|
|
smb_fname, /* fname */
|
|
DELETE_ACCESS, /* access_mask */
|
|
(FILE_SHARE_READ | /* share_access */
|
|
FILE_SHARE_WRITE | FILE_SHARE_DELETE),
|
|
FILE_OPEN, /* create_disposition*/
|
|
0, /* create_options */
|
|
FILE_ATTRIBUTE_NORMAL, /* file_attributes */
|
|
0, /* oplock_request */
|
|
0, /* allocation_size */
|
|
NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE, /* private_flags */
|
|
NULL, /* sd */
|
|
NULL, /* ea_list */
|
|
&streams[i], /* result */
|
|
NULL); /* pinfo */
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("Could not open stream %s: %s\n",
|
|
smb_fname_str_dbg(smb_fname),
|
|
nt_errstr(status)));
|
|
|
|
TALLOC_FREE(smb_fname);
|
|
break;
|
|
}
|
|
TALLOC_FREE(smb_fname);
|
|
}
|
|
|
|
/*
|
|
* 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,
|
|
fsp_str_dbg(streams[i])));
|
|
close_file(NULL, streams[i], NORMAL_CLOSE);
|
|
}
|
|
|
|
fail:
|
|
TALLOC_FREE(frame);
|
|
return status;
|
|
}
|
|
|
|
/*********************************************************************
|
|
Create a default ACL by inheriting from the parent. If no inheritance
|
|
from the parent available, don't set anything. This will leave the actual
|
|
permissions the new file or directory already got from the filesystem
|
|
as the NT ACL when read.
|
|
*********************************************************************/
|
|
|
|
static NTSTATUS inherit_new_acl(files_struct *fsp)
|
|
{
|
|
TALLOC_CTX *ctx = talloc_tos();
|
|
char *parent_name = NULL;
|
|
struct security_descriptor *parent_desc = NULL;
|
|
NTSTATUS status = NT_STATUS_OK;
|
|
struct security_descriptor *psd = NULL;
|
|
struct dom_sid *owner_sid = NULL;
|
|
struct dom_sid *group_sid = NULL;
|
|
uint32_t security_info_sent = (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL);
|
|
bool inherit_owner = lp_inherit_owner(SNUM(fsp->conn));
|
|
bool inheritable_components = false;
|
|
size_t size = 0;
|
|
|
|
if (!parent_dirname(ctx, fsp->fsp_name->base_name, &parent_name, NULL)) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
status = SMB_VFS_GET_NT_ACL(fsp->conn,
|
|
parent_name,
|
|
(SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL),
|
|
&parent_desc);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
inheritable_components = sd_has_inheritable_components(parent_desc,
|
|
fsp->is_directory);
|
|
|
|
if (!inheritable_components && !inherit_owner) {
|
|
/* Nothing to inherit and not setting owner. */
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/* Create an inherited descriptor from the parent. */
|
|
|
|
if (DEBUGLEVEL >= 10) {
|
|
DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
|
|
fsp_str_dbg(fsp) ));
|
|
NDR_PRINT_DEBUG(security_descriptor, parent_desc);
|
|
}
|
|
|
|
/* Inherit from parent descriptor if "inherit owner" set. */
|
|
if (inherit_owner) {
|
|
owner_sid = parent_desc->owner_sid;
|
|
group_sid = parent_desc->group_sid;
|
|
}
|
|
|
|
if (owner_sid == NULL) {
|
|
owner_sid = &fsp->conn->session_info->security_token->sids[PRIMARY_USER_SID_INDEX];
|
|
}
|
|
if (group_sid == NULL) {
|
|
group_sid = &fsp->conn->session_info->security_token->sids[PRIMARY_GROUP_SID_INDEX];
|
|
}
|
|
|
|
status = se_create_child_secdesc(ctx,
|
|
&psd,
|
|
&size,
|
|
parent_desc,
|
|
owner_sid,
|
|
group_sid,
|
|
fsp->is_directory);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
/* If inheritable_components == false,
|
|
se_create_child_secdesc()
|
|
creates a security desriptor with a NULL dacl
|
|
entry, but with SEC_DESC_DACL_PRESENT. We need
|
|
to remove that flag. */
|
|
|
|
if (!inheritable_components) {
|
|
security_info_sent &= ~SECINFO_DACL;
|
|
psd->type &= ~SEC_DESC_DACL_PRESENT;
|
|
}
|
|
|
|
if (DEBUGLEVEL >= 10) {
|
|
DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
|
|
fsp_str_dbg(fsp) ));
|
|
NDR_PRINT_DEBUG(security_descriptor, psd);
|
|
}
|
|
|
|
if (inherit_owner) {
|
|
/* We need to be root to force this. */
|
|
become_root();
|
|
}
|
|
status = SMB_VFS_FSET_NT_ACL(fsp,
|
|
security_info_sent,
|
|
psd);
|
|
if (inherit_owner) {
|
|
unbecome_root();
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Wrapper around open_file_ntcreate and open_directory
|
|
*/
|
|
|
|
static NTSTATUS create_file_unixpath(connection_struct *conn,
|
|
struct smb_request *req,
|
|
struct smb_filename *smb_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,
|
|
uint32_t private_flags,
|
|
struct security_descriptor *sd,
|
|
struct ea_list *ea_list,
|
|
|
|
files_struct **result,
|
|
int *pinfo)
|
|
{
|
|
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 private_flags = 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,
|
|
(unsigned int)private_flags,
|
|
ea_list, sd, smb_fname_str_dbg(smb_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 ((conn->fs_capabilities & FILE_NAMED_STREAMS)
|
|
&& (access_mask & DELETE_ACCESS)
|
|
&& !is_ntfs_stream_smb_fname(smb_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, smb_fname->base_name);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
|
|
!security_token_has_privilege(get_current_nttok(conn),
|
|
SEC_PRIV_SECURITY)) {
|
|
DEBUG(10, ("create_file_unixpath: open on %s "
|
|
"failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
|
|
smb_fname_str_dbg(smb_fname)));
|
|
status = NT_STATUS_PRIVILEGE_NOT_HELD;
|
|
goto fail;
|
|
}
|
|
|
|
if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
|
|
&& is_ntfs_stream_smb_fname(smb_fname)
|
|
&& (!(private_flags & NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE))) {
|
|
uint32 base_create_disposition;
|
|
struct smb_filename *smb_fname_base = NULL;
|
|
|
|
if (create_options & FILE_DIRECTORY_FILE) {
|
|
status = NT_STATUS_NOT_A_DIRECTORY;
|
|
goto fail;
|
|
}
|
|
|
|
switch (create_disposition) {
|
|
case FILE_OPEN:
|
|
base_create_disposition = FILE_OPEN;
|
|
break;
|
|
default:
|
|
base_create_disposition = FILE_OPEN_IF;
|
|
break;
|
|
}
|
|
|
|
/* Create an smb_filename with stream_name == NULL. */
|
|
status = create_synthetic_smb_fname(talloc_tos(),
|
|
smb_fname->base_name,
|
|
NULL, NULL,
|
|
&smb_fname_base);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
if (SMB_VFS_STAT(conn, smb_fname_base) == -1) {
|
|
DEBUG(10, ("Unable to stat stream: %s\n",
|
|
smb_fname_str_dbg(smb_fname_base)));
|
|
}
|
|
|
|
/* Open the base file. */
|
|
status = create_file_unixpath(conn, NULL, smb_fname_base, 0,
|
|
FILE_SHARE_READ
|
|
| FILE_SHARE_WRITE
|
|
| FILE_SHARE_DELETE,
|
|
base_create_disposition,
|
|
0, 0, 0, 0, 0, NULL, NULL,
|
|
&base_fsp, NULL);
|
|
TALLOC_FREE(smb_fname_base);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("create_file_unixpath for base %s failed: "
|
|
"%s\n", smb_fname->base_name,
|
|
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, smb_fname, 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;
|
|
}
|
|
|
|
status = fsp_set_smb_fname(fsp, smb_fname);
|
|
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,
|
|
access_mask,
|
|
share_access,
|
|
create_disposition,
|
|
create_options,
|
|
file_attributes,
|
|
oplock_request,
|
|
private_flags,
|
|
&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, smb_fname, 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;
|
|
|
|
if ((ea_list != NULL) &&
|
|
((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN))) {
|
|
status = set_ea(conn, fsp, fsp->fsp_name, ea_list);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if (!fsp->is_directory && S_ISDIR(fsp->fsp_name->st.st_ex_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 > fsp->fsp_name->st.st_ex_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)fsp->fsp_name->st.st_ex_size);
|
|
}
|
|
}
|
|
|
|
if ((info == FILE_WAS_CREATED) && lp_nt_acl_support(SNUM(conn)) &&
|
|
fsp->base_fsp == NULL) {
|
|
if (sd != NULL) {
|
|
/*
|
|
* 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>.
|
|
*/
|
|
|
|
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 & (SECINFO_OWNER|
|
|
SECINFO_GROUP|
|
|
SECINFO_DACL|
|
|
SECINFO_SACL)) {
|
|
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;
|
|
}
|
|
} else if (lp_inherit_acls(SNUM(conn))) {
|
|
/* Inherit from parent. Errors here are not fatal. */
|
|
status = inherit_new_acl(fsp);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
|
|
fsp_str_dbg(fsp),
|
|
nt_errstr(status) ));
|
|
}
|
|
}
|
|
}
|
|
|
|
DEBUG(10, ("create_file_unixpath: info=%d\n", info));
|
|
|
|
*result = fsp;
|
|
if (pinfo != NULL) {
|
|
*pinfo = info;
|
|
}
|
|
|
|
smb_fname->st = fsp->fsp_name->st;
|
|
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* Calculate the full path name given a relative fid.
|
|
*/
|
|
NTSTATUS get_relative_fid_filename(connection_struct *conn,
|
|
struct smb_request *req,
|
|
uint16_t root_dir_fid,
|
|
const struct smb_filename *smb_fname,
|
|
struct smb_filename **smb_fname_out)
|
|
{
|
|
files_struct *dir_fsp;
|
|
char *parent_fname = NULL;
|
|
char *new_base_name = NULL;
|
|
NTSTATUS status;
|
|
|
|
if (root_dir_fid == 0 || !smb_fname) {
|
|
status = NT_STATUS_INTERNAL_ERROR;
|
|
goto out;
|
|
}
|
|
|
|
dir_fsp = file_fsp(req, root_dir_fid);
|
|
|
|
if (dir_fsp == NULL) {
|
|
status = NT_STATUS_INVALID_HANDLE;
|
|
goto out;
|
|
}
|
|
|
|
if (is_ntfs_stream_smb_fname(dir_fsp->fsp_name)) {
|
|
status = NT_STATUS_INVALID_HANDLE;
|
|
goto out;
|
|
}
|
|
|
|
if (!dir_fsp->is_directory) {
|
|
|
|
/*
|
|
* Check to see if this is a mac fork of some kind.
|
|
*/
|
|
|
|
if ((conn->fs_capabilities & FILE_NAMED_STREAMS) &&
|
|
is_ntfs_stream_smb_fname(smb_fname)) {
|
|
status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
we need to handle the case when we get a
|
|
relative open relative to a file and the
|
|
pathname is blank - this is a reopen!
|
|
(hint from demyn plantenberg)
|
|
*/
|
|
|
|
status = NT_STATUS_INVALID_HANDLE;
|
|
goto out;
|
|
}
|
|
|
|
if (ISDOT(dir_fsp->fsp_name->base_name)) {
|
|
/*
|
|
* We're at the toplevel dir, the final file name
|
|
* must not contain ./, as this is filtered out
|
|
* normally by srvstr_get_path and unix_convert
|
|
* explicitly rejects paths containing ./.
|
|
*/
|
|
parent_fname = talloc_strdup(talloc_tos(), "");
|
|
if (parent_fname == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto out;
|
|
}
|
|
} else {
|
|
size_t dir_name_len = strlen(dir_fsp->fsp_name->base_name);
|
|
|
|
/*
|
|
* Copy in the base directory name.
|
|
*/
|
|
|
|
parent_fname = talloc_array(talloc_tos(), char,
|
|
dir_name_len+2);
|
|
if (parent_fname == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto out;
|
|
}
|
|
memcpy(parent_fname, dir_fsp->fsp_name->base_name,
|
|
dir_name_len+1);
|
|
|
|
/*
|
|
* Ensure it ends in a '/'.
|
|
* We used TALLOC_SIZE +2 to add space for the '/'.
|
|
*/
|
|
|
|
if(dir_name_len
|
|
&& (parent_fname[dir_name_len-1] != '\\')
|
|
&& (parent_fname[dir_name_len-1] != '/')) {
|
|
parent_fname[dir_name_len] = '/';
|
|
parent_fname[dir_name_len+1] = '\0';
|
|
}
|
|
}
|
|
|
|
new_base_name = talloc_asprintf(talloc_tos(), "%s%s", parent_fname,
|
|
smb_fname->base_name);
|
|
if (new_base_name == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto out;
|
|
}
|
|
|
|
status = filename_convert(req,
|
|
conn,
|
|
req->flags2 & FLAGS2_DFS_PATHNAMES,
|
|
new_base_name,
|
|
0,
|
|
NULL,
|
|
smb_fname_out);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
TALLOC_FREE(parent_fname);
|
|
TALLOC_FREE(new_base_name);
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS create_file_default(connection_struct *conn,
|
|
struct smb_request *req,
|
|
uint16_t root_dir_fid,
|
|
struct smb_filename *smb_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,
|
|
uint32_t private_flags,
|
|
struct security_descriptor *sd,
|
|
struct ea_list *ea_list,
|
|
files_struct **result,
|
|
int *pinfo)
|
|
{
|
|
int info = FILE_WAS_OPENED;
|
|
files_struct *fsp = NULL;
|
|
NTSTATUS status;
|
|
bool stream_name = false;
|
|
|
|
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 "
|
|
"private_flags = 0x%x "
|
|
"root_dir_fid = 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,
|
|
(unsigned int)private_flags,
|
|
(unsigned int)root_dir_fid,
|
|
ea_list, sd, smb_fname_str_dbg(smb_fname)));
|
|
|
|
/*
|
|
* Calculate the filename from the root_dir_if if necessary.
|
|
*/
|
|
|
|
if (root_dir_fid != 0) {
|
|
struct smb_filename *smb_fname_out = NULL;
|
|
status = get_relative_fid_filename(conn, req, root_dir_fid,
|
|
smb_fname, &smb_fname_out);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
smb_fname = smb_fname_out;
|
|
}
|
|
|
|
/*
|
|
* Check to see if this is a mac fork of some kind.
|
|
*/
|
|
|
|
stream_name = is_ntfs_stream_smb_fname(smb_fname);
|
|
if (stream_name) {
|
|
enum FAKE_FILE_TYPE fake_file_type;
|
|
|
|
fake_file_type = is_fake_file(smb_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, smb_fname,
|
|
access_mask, &fsp);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
ZERO_STRUCT(smb_fname->st);
|
|
goto done;
|
|
}
|
|
|
|
if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
|
|
status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if (stream_name && is_ntfs_default_stream_smb_fname(smb_fname)) {
|
|
int ret;
|
|
smb_fname->stream_name = NULL;
|
|
/* We have to handle this error here. */
|
|
if (create_options & FILE_DIRECTORY_FILE) {
|
|
status = NT_STATUS_NOT_A_DIRECTORY;
|
|
goto fail;
|
|
}
|
|
if (lp_posix_pathnames()) {
|
|
ret = SMB_VFS_LSTAT(conn, smb_fname);
|
|
} else {
|
|
ret = SMB_VFS_STAT(conn, smb_fname);
|
|
}
|
|
|
|
if (ret == 0 && VALID_STAT_OF_DIR(smb_fname->st)) {
|
|
status = NT_STATUS_FILE_IS_A_DIRECTORY;
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
status = create_file_unixpath(
|
|
conn, req, smb_fname, access_mask, share_access,
|
|
create_disposition, create_options, file_attributes,
|
|
oplock_request, allocation_size, private_flags,
|
|
sd, ea_list,
|
|
&fsp, &info);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
done:
|
|
DEBUG(10, ("create_file: info=%d\n", info));
|
|
|
|
*result = fsp;
|
|
if (pinfo != NULL) {
|
|
*pinfo = info;
|
|
}
|
|
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;
|
|
}
|