#include "../libcli/security/security.h"
#include "../librpc/gen_ndr/ndr_security.h"
#include "../librpc/gen_ndr/open_files.h"
+#include "../librpc/gen_ndr/idmap.h"
+#include "passdb/lookup_sid.h"
#include "auth.h"
#include "serverid.h"
#include "messages.h"
+#include "source3/lib/dbwrap/dbwrap_watch.h"
extern const struct generic_mapping file_generic_mapping;
struct security_descriptor *sd = NULL;
uint32_t rejected_share_access;
uint32_t rejected_mask = access_mask;
+ uint32_t do_not_check_mask = 0;
rejected_share_access = access_mask & ~(conn->share_access);
status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
(SECINFO_OWNER |
SECINFO_GROUP |
- SECINFO_DACL),&sd);
+ SECINFO_DACL), talloc_tos(), &sd);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("smbd_check_access_rights: Could not get acl "
}
/*
- * Never test FILE_READ_ATTRIBUTES. se_file_access_check() also takes care of
+ * If we can access the path to this file, by
+ * default we have FILE_READ_ATTRIBUTES from the
+ * containing directory. See the section:
+ * "Algorithm to Check Access to an Existing File"
+ * in MS-FSA.pdf.
+ *
+ * se_file_access_check() also takes care of
* owner WRITE_DAC and READ_CONTROL.
*/
+ do_not_check_mask = FILE_READ_ATTRIBUTES;
+
+ /*
+ * Samba 3.6 and earlier granted execute access even
+ * if the ACL did not contain execute rights.
+ * Samba 4.0 is more correct and checks it.
+ * The compatibilty mode allows to skip this check
+ * to smoothen upgrades.
+ */
+ if (lp_acl_allow_execute_always(SNUM(conn))) {
+ do_not_check_mask |= FILE_EXECUTE;
+ }
+
status = se_file_access_check(sd,
get_current_nttok(conn),
use_privs,
- (access_mask & ~FILE_READ_ATTRIBUTES),
+ (access_mask & ~do_not_check_mask),
&rejected_mask);
DEBUG(10,("smbd_check_access_rights: file %s requesting "
status = SMB_VFS_GET_NT_ACL(conn,
parent_dir,
SECINFO_DACL,
+ talloc_tos(),
&parent_sd);
if (!NT_STATUS_IS_OK(status)) {
}
/*
- * Never test FILE_READ_ATTRIBUTES. se_file_access_check() also takes care of
+ * If we can access the path to this file, by
+ * default we have FILE_READ_ATTRIBUTES from the
+ * containing directory. See the section:
+ * "Algorithm to Check Access to an Existing File"
+ * in MS-FSA.pdf.
+ *
+ * se_file_access_check() also takes care of
* owner WRITE_DAC and READ_CONTROL.
*/
status = se_file_access_check(parent_sd,
const char *inherit_from_dir,
files_struct *fsp)
{
- struct smb_filename *smb_fname_parent = NULL;
- NTSTATUS status;
+ struct smb_filename *smb_fname_parent;
int ret;
- status = create_synthetic_smb_fname(talloc_tos(), inherit_from_dir,
- NULL, NULL, &smb_fname_parent);
- if (!NT_STATUS_IS_OK(status)) {
+ smb_fname_parent = synthetic_smb_fname(talloc_tos(), inherit_from_dir,
+ NULL, NULL);
+ if (smb_fname_parent == NULL) {
return;
}
const char *fname,
SMB_STRUCT_STAT *psbuf)
{
- struct smb_filename *smb_fname_parent = NULL;
+ struct smb_filename *smb_fname_parent;
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;
+ smb_fname_parent = synthetic_smb_fname(ctx, inherit_from_dir,
+ NULL, NULL);
+ if (smb_fname_parent == NULL) {
+ return NT_STATUS_NO_MEMORY;
}
ret = SMB_VFS_STAT(conn, smb_fname_parent);
goto chdir;
}
- status = create_synthetic_smb_fname(ctx, ".", NULL, NULL,
- &smb_fname_cwd);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
+ smb_fname_cwd = synthetic_smb_fname(ctx, ".", NULL, NULL);
+ if (smb_fname_cwd == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto chdir;
}
ret = SMB_VFS_STAT(conn, smb_fname_cwd);
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;
}
"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;
}
((access_mask & ~stat_open_bits) == 0));
}
+static bool has_delete_on_close(struct share_mode_lock *lck,
+ uint32_t name_hash)
+{
+ struct share_mode_data *d = lck->data;
+ uint32_t i;
+
+ if (d->num_share_modes == 0) {
+ return false;
+ }
+ if (!is_delete_on_close_set(lck, name_hash)) {
+ return false;
+ }
+ for (i=0; i<d->num_share_modes; i++) {
+ if (!share_mode_stale_pid(d, i)) {
+ return true;
+ }
+ }
+ return false;
+}
+
/****************************************************************************
Deal with share modes
Invarient: Share mode must be locked on entry and exit.
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;
return NT_STATUS_OK;
}
- /* A delete on close prohibits everything */
-
- if (is_delete_on_close_set(lck, name_hash)) {
- /*
- * Check the delete on close token
- * is valid. It could have been left
- * after a server crash.
- */
- for(i = 0; i < lck->data->num_share_modes; i++) {
- if (!share_mode_stale_pid(lck->data, i)) {
-
- *file_existed = true;
-
- return NT_STATUS_DELETE_PENDING;
- }
- }
- return NT_STATUS_OK;
- }
-
if (is_stat_open(access_mask)) {
/* Stat open that doesn't trigger oplock breaks or share mode
* checks... ! JRA. */
/* 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);
+ (uint8 *)msg, sizeof(msg));
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("Could not send oplock break message: %s\n",
nt_errstr(status)));
bool *got_level2,
bool *got_no_oplock)
{
+ struct share_mode_data *d = lck->data;
int i;
*pp_batch = NULL;
return;
}
- for (i=0; i<lck->data->num_share_modes; i++) {
- if (!is_valid_share_mode_entry(&lck->data->share_modes[i])) {
+ for (i=0; i<d->num_share_modes; i++) {
+ struct share_mode_entry *e = &d->share_modes[i];
+
+ if (!is_valid_share_mode_entry(e)) {
continue;
}
- if (lck->data->share_modes[i].op_type == NO_OPLOCK &&
- is_stat_open(lck->data->share_modes[i].access_mask)) {
+ if (e->op_type == NO_OPLOCK && is_stat_open(e->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)) {
+ if (BATCH_OPLOCK_TYPE(e->op_type)) {
/* batch - can only be one. */
- if (share_mode_stale_pid(lck->data, i)) {
+ if (share_mode_stale_pid(d, i)) {
DEBUG(10, ("Found stale batch oplock\n"));
continue;
}
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];
+ *pp_batch = e;
}
- if (EXCLUSIVE_OPLOCK_TYPE(lck->data->share_modes[i].op_type)) {
- if (share_mode_stale_pid(lck->data, i)) {
+ if (EXCLUSIVE_OPLOCK_TYPE(e->op_type)) {
+ if (share_mode_stale_pid(d, i)) {
DEBUG(10, ("Found stale duplicate oplock\n"));
continue;
}
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];
+ *pp_ex_or_batch = e;
}
- if (LEVEL_II_OPLOCK_TYPE(lck->data->share_modes[i].op_type)) {
+ if (LEVEL_II_OPLOCK_TYPE(e->op_type)) {
if (*pp_batch || *pp_ex_or_batch) {
- if (share_mode_stale_pid(lck->data, i)) {
+ if (share_mode_stale_pid(d, i)) {
DEBUG(10, ("Found stale LevelII "
"oplock\n"));
continue;
*got_level2 = true;
}
- if (lck->data->share_modes[i].op_type == NO_OPLOCK) {
+ if (e->op_type == NO_OPLOCK) {
if (*pp_batch || *pp_ex_or_batch) {
- if (share_mode_stale_pid(lck->data, i)) {
+ if (share_mode_stale_pid(d, i)) {
DEBUG(10, ("Found stale NO_OPLOCK "
"entry\n"));
continue;
if (!br_lck)
return false;
- return br_lck->num_locks > 0 ? true : false;
+ return (brl_num_locks(br_lck) > 0);
}
static void grant_fsp_oplock_type(files_struct *fsp,
* 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 {
+ if (got_level2_oplock || got_a_none_oplock) {
+ if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
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;
- }
}
/*
* or if we've turned them off.
*/
if (fsp->oplock_type == LEVEL_II_OPLOCK && !allow_level2) {
- fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
+ fsp->oplock_type = NO_OPLOCK;
+ }
+
+ if (fsp->oplock_type == LEVEL_II_OPLOCK && !got_level2_oplock) {
+ /*
+ * We're the first level2 oplock. Indicate that in brlock.tdb.
+ */
+ struct byte_range_lock *brl;
+
+ brl = brl_get_locks(talloc_tos(), fsp);
+ if (brl != NULL) {
+ brl_set_have_read_oplocks(brl, true);
+ TALLOC_FREE(brl);
+ }
}
DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
return (timeval_compare(&end_time, &now) < 0);
}
+struct defer_open_state {
+ struct smbd_server_connection *sconn;
+ uint64_t mid;
+};
+
+static void defer_open_done(struct tevent_req *req);
+
/****************************************************************************
Handle the 1 second delay in returning a SHARING_VIOLATION error.
****************************************************************************/
struct smb_request *req,
struct deferred_open_record *state)
{
- struct server_id self = messaging_server_id(req->sconn->msg_ctx);
-
- /* Paranoia check */
-
- if (lck) {
- int i;
-
- 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) &&
- serverid_equal(&self, &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));
- TALLOC_FREE(lck);
- 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,
exit_server("push_deferred_open_message_smb failed");
}
if (lck) {
- add_deferred_open(lck, req->mid, request_time, self, state->id);
+ struct defer_open_state *watch_state;
+ struct tevent_req *watch_req;
+ bool ret;
+
+ watch_state = talloc(req->sconn, struct defer_open_state);
+ if (watch_state == NULL) {
+ exit_server("talloc failed");
+ }
+ watch_state->sconn = req->sconn;
+ watch_state->mid = req->mid;
+
+ DEBUG(10, ("defering mid %llu\n",
+ (unsigned long long)req->mid));
+
+ watch_req = dbwrap_record_watch_send(
+ watch_state, req->sconn->ev_ctx, lck->data->record,
+ req->sconn->msg_ctx);
+ if (watch_req == NULL) {
+ exit_server("Could not watch share mode record");
+ }
+ tevent_req_set_callback(watch_req, defer_open_done,
+ watch_state);
+
+ ret = tevent_req_set_endtime(
+ watch_req, req->sconn->ev_ctx,
+ timeval_sum(&request_time, &timeout));
+ SMB_ASSERT(ret);
}
}
+static void defer_open_done(struct tevent_req *req)
+{
+ struct defer_open_state *state = tevent_req_callback_data(
+ req, struct defer_open_state);
+ NTSTATUS status;
+ bool ret;
+
+ status = dbwrap_record_watch_recv(req, talloc_tos(), NULL);
+ TALLOC_FREE(req);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(5, ("dbwrap_record_watch_recv returned %s\n",
+ nt_errstr(status)));
+ /*
+ * Even if it failed, retry anyway. TODO: We need a way to
+ * tell a re-scheduled open about that error.
+ */
+ }
+
+ DEBUG(10, ("scheduling mid %llu\n", (unsigned long long)state->mid));
+
+ ret = schedule_deferred_open_message_smb(state->sconn, state->mid);
+ SMB_ASSERT(ret);
+ TALLOC_FREE(state);
+}
+
/****************************************************************************
On overwrite open ensure that the attributes match.
status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
(SECINFO_OWNER |
SECINFO_GROUP |
- SECINFO_DACL),&sd);
+ SECINFO_DACL),
+ talloc_tos(), &sd);
if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
/*
}
/*
- * Never test FILE_READ_ATTRIBUTES. se_file_access_check()
+ * If we can access the path to this file, by
+ * default we have FILE_READ_ATTRIBUTES from the
+ * containing directory. See the section:
+ * "Algorithm to Check Access to an Existing File"
+ * in MS-FSA.pdf.
+ *
+ * se_file_access_check()
* also takes care of owner WRITE_DAC and READ_CONTROL.
*/
status = se_file_access_check(sd,
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_existing_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);
-}
-
/****************************************************************************
Return true if this is a state pointer to an asynchronous create.
****************************************************************************/
* mean the same thing under DOS and Unix.
*/
- need_write =
- ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ||
- (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE));
-
+ need_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA));
if (!need_write) {
return O_RDONLY;
}
bool def_acl = False;
bool posix_open = False;
bool new_file_created = False;
+ bool first_open_attempt = true;
NTSTATUS fsp_open = NT_STATUS_ACCESS_DENIED;
mode_t new_unx_mode = (mode_t)0;
mode_t unx_mode = (mode_t)0;
if (is_deferred_open_async(ptr)) {
SET_STAT_INVALID(smb_fname->st);
file_existed = false;
- } else {
- struct deferred_open_record *state = (struct deferred_open_record *)ptr;
- /* 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);
+
+ first_open_attempt = false;
}
}
open_access_mask = access_mask;
- if ((flags2 & O_TRUNC) || (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
+ if (flags2 & O_TRUNC) {
open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
}
flags2 &= ~(O_CREAT|O_TRUNC);
}
+ if (first_open_attempt && lp_kernel_oplocks(SNUM(conn))) {
+ /*
+ * With kernel oplocks the open breaking an oplock
+ * blocks until the oplock holder has given up the
+ * oplock or closed the file. We prevent this by first
+ * trying to open the file with O_NONBLOCK (see "man
+ * fcntl" on Linux). For the second try, triggered by
+ * an oplock break response, we do not need this
+ * anymore.
+ *
+ * This is true under the assumption that only Samba
+ * requests kernel oplocks. Once someone else like
+ * NFSv4 starts to use that API, we will have to
+ * modify this by communicating with the NFSv4 server.
+ */
+ flags2 |= O_NONBLOCK;
+ }
+
/*
* Ensure we can't write on a read-only share or file.
*/
flags|flags2, unx_mode, access_mask,
open_access_mask, &new_file_created);
+ if (NT_STATUS_EQUAL(fsp_open, NT_STATUS_NETWORK_BUSY)) {
+ struct deferred_open_record state;
+
+ /*
+ * EWOULDBLOCK/EAGAIN maps to NETWORK_BUSY.
+ */
+ if (file_existed && S_ISFIFO(fsp->fsp_name->st.st_ex_mode)) {
+ DEBUG(10, ("FIFO busy\n"));
+ return NT_STATUS_NETWORK_BUSY;
+ }
+ if (req == NULL) {
+ DEBUG(10, ("Internal open busy\n"));
+ return NT_STATUS_NETWORK_BUSY;
+ }
+
+ /*
+ * From here on we assume this is an oplock break triggered
+ */
+
+ lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
+ if (lck == NULL) {
+ state.delayed_for_oplocks = false;
+ state.async_open = false;
+ state.id = fsp->file_id;
+ defer_open(NULL, request_time, timeval_set(0, 0),
+ req, &state);
+ DEBUG(10, ("No share mode lock found after "
+ "EWOULDBLOCK, retrying sync\n"));
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+
+ find_oplock_types(fsp, 0, lck, &batch_entry, &exclusive_entry,
+ &got_level2_oplock, &got_a_none_oplock);
+
+ if (delay_for_batch_oplocks(fsp, req->mid, 0, batch_entry) ||
+ delay_for_exclusive_oplocks(fsp, req->mid, 0,
+ exclusive_entry)) {
+ schedule_defer_open(lck, request_time, req);
+ TALLOC_FREE(lck);
+ DEBUG(10, ("Sent oplock break request to kernel "
+ "oplock holder\n"));
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+
+ /*
+ * No oplock from Samba around. Immediately retry with
+ * a blocking open.
+ */
+ state.delayed_for_oplocks = false;
+ state.async_open = false;
+ state.id = lck->data->id;
+ defer_open(lck, request_time, timeval_set(0, 0), req, &state);
+ TALLOC_FREE(lck);
+ DEBUG(10, ("No Samba oplock around after EWOULDBLOCK. "
+ "Retrying sync\n"));
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+
if (!NT_STATUS_IS_OK(fsp_open)) {
if (NT_STATUS_EQUAL(fsp_open, NT_STATUS_RETRY)) {
schedule_async_open(request_time, req);
}
- TALLOC_FREE(lck);
return fsp_open;
}
* just fail the open to prevent creating any problems
* in the open file db having the wrong dev/ino key.
*/
- TALLOC_FREE(lck);
fd_close(fsp);
DEBUG(1,("open_file_ntcreate: file %s - dev/ino mismatch. "
"Old (dev=0x%llu, ino =0x%llu). "
&got_level2_oplock,
&got_a_none_oplock);
+ if (has_delete_on_close(lck, fsp->name_hash)) {
+ TALLOC_FREE(lck);
+ fd_close(fsp);
+ return NT_STATUS_DELETE_PENDING;
+ }
+
/* First pass - send break only on batch oplocks. */
if ((req != NULL) &&
delay_for_batch_oplocks(fsp,
return NT_STATUS_SHARING_VIOLATION;
}
- status = open_mode_check(conn, lck, fsp->name_hash,
+ status = open_mode_check(conn, lck,
access_mask, share_access,
- create_options, &file_existed);
+ &file_existed);
if (NT_STATUS_IS_OK(status)) {
/* We might be going to allow this open. Check oplock
}
}
- if (NT_STATUS_EQUAL(status, NT_STATUS_DELETE_PENDING)) {
- /* DELETE_PENDING is not deferred for a second */
- TALLOC_FREE(lck);
- fd_close(fsp);
- return status;
- }
-
if (!NT_STATUS_IS_OK(status)) {
uint32 can_access_mask;
bool can_access = True;
/*
* If we're returning a share violation, ensure we
- * cope with the braindead 1 second delay.
+ * cope with the braindead 1 second delay (SMB1 only).
*/
if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
+ !conn->sconn->using_smb2 &&
lp_defer_sharing_violations()) {
struct timeval timeout;
struct deferred_open_record state;
* We have the share entry *locked*.....
*/
- SMB_ASSERT(lck != NULL);
-
/* Delete streams if create_disposition requires it */
if (!new_file_created && clear_ads(create_disposition) &&
!is_ntfs_stream_smb_fname(smb_fname)) {
status = set_file_oplock(fsp, fsp->oplock_type);
if (!NT_STATUS_IS_OK(status)) {
/*
- * Could not get the kernel oplock or there are byte-range
- * locks on the file.
+ * Could not get the kernel oplock
*/
fsp->oplock_type = NO_OPLOCK;
}
- set_share_mode(lck, fsp, get_current_uid(conn),
- req ? req->mid : 0,
- fsp->oplock_type);
+ if (!set_share_mode(lck, fsp, get_current_uid(conn),
+ req ? req->mid : 0,
+ fsp->oplock_type)) {
+ TALLOC_FREE(lck);
+ fd_close(fsp);
+ return NT_STATUS_NO_MEMORY;
+ }
/* Handle strange delete on close create semantics. */
if (create_options & FILE_DELETE_ON_CLOSE) {
(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;
return NT_STATUS_SHARING_VIOLATION;
}
- status = open_mode_check(conn, lck, fsp->name_hash,
+ if (has_delete_on_close(lck, fsp->name_hash)) {
+ TALLOC_FREE(lck);
+ fd_close(fsp);
+ file_free(req, fsp);
+ return NT_STATUS_DELETE_PENDING;
+ }
+
+ status = open_mode_check(conn, lck,
access_mask, share_access,
- create_options, &dir_existed);
+ &dir_existed);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(lck);
return status;
}
- set_share_mode(lck, fsp, get_current_uid(conn),
- req ? req->mid : 0, NO_OPLOCK);
+ if (!set_share_mode(lck, fsp, get_current_uid(conn),
+ req ? req->mid : 0, NO_OPLOCK)) {
+ TALLOC_FREE(lck);
+ fd_close(fsp);
+ file_free(req, fsp);
+ return NT_STATUS_NO_MEMORY;
+ }
/* 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)) {
+ del_share_mode(lck, fsp);
TALLOC_FREE(lck);
fd_close(fsp);
file_free(req, fsp);
stream_name = NULL;
}
- status = create_synthetic_smb_fname(talloc_tos(), base_name,
- stream_name, NULL, &smb_fname);
- if (!NT_STATUS_IS_OK(status)) {
+ smb_fname = synthetic_smb_fname(talloc_tos(), base_name,
+ stream_name, NULL);
+ if (smb_fname == NULL) {
return;
}
}
for (i=0; i<num_streams; i++) {
- struct smb_filename *smb_fname = NULL;
+ struct smb_filename *smb_fname;
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)) {
+ smb_fname = synthetic_smb_fname(
+ talloc_tos(), fname, stream_info[i].name, NULL);
+ if (smb_fname == NULL) {
+ status = NT_STATUS_NO_MEMORY;
goto fail;
}
static NTSTATUS inherit_new_acl(files_struct *fsp)
{
- TALLOC_CTX *ctx = talloc_tos();
+ TALLOC_CTX *frame = talloc_stackframe();
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;
+ const struct dom_sid *owner_sid = NULL;
+ const struct dom_sid *group_sid = NULL;
uint32_t security_info_sent = (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL);
+ struct security_token *token = fsp->conn->session_info->security_token;
bool inherit_owner = lp_inherit_owner(SNUM(fsp->conn));
bool inheritable_components = false;
+ bool try_builtin_administrators = false;
+ const struct dom_sid *BA_U_sid = NULL;
+ const struct dom_sid *BA_G_sid = NULL;
+ bool try_system = false;
+ const struct dom_sid *SY_U_sid = NULL;
+ const struct dom_sid *SY_G_sid = NULL;
size_t size = 0;
- if (!parent_dirname(ctx, fsp->fsp_name->base_name, &parent_name, NULL)) {
+ if (!parent_dirname(frame, fsp->fsp_name->base_name, &parent_name, NULL)) {
+ TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
status = SMB_VFS_GET_NT_ACL(fsp->conn,
- parent_name,
- (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL),
- &parent_desc);
+ parent_name,
+ (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL),
+ frame,
+ &parent_desc);
if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(frame);
return status;
}
fsp->is_directory);
if (!inheritable_components && !inherit_owner) {
+ TALLOC_FREE(frame);
/* Nothing to inherit and not setting owner. */
return NT_STATUS_OK;
}
}
if (owner_sid == NULL) {
- owner_sid = &fsp->conn->session_info->security_token->sids[PRIMARY_USER_SID_INDEX];
+ if (security_token_has_builtin_administrators(token)) {
+ try_builtin_administrators = true;
+ } else if (security_token_is_system(token)) {
+ try_builtin_administrators = true;
+ try_system = true;
+ }
}
+
+ if (group_sid == NULL &&
+ token->num_sids == PRIMARY_GROUP_SID_INDEX)
+ {
+ if (security_token_is_system(token)) {
+ try_builtin_administrators = true;
+ try_system = true;
+ }
+ }
+
+ if (try_builtin_administrators) {
+ struct unixid ids;
+ bool ok;
+
+ ZERO_STRUCT(ids);
+ ok = sids_to_unixids(&global_sid_Builtin_Administrators, 1, &ids);
+ if (ok) {
+ switch (ids.type) {
+ case ID_TYPE_BOTH:
+ BA_U_sid = &global_sid_Builtin_Administrators;
+ BA_G_sid = &global_sid_Builtin_Administrators;
+ break;
+ case ID_TYPE_UID:
+ BA_U_sid = &global_sid_Builtin_Administrators;
+ break;
+ case ID_TYPE_GID:
+ BA_G_sid = &global_sid_Builtin_Administrators;
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
+ if (try_system) {
+ struct unixid ids;
+ bool ok;
+
+ ZERO_STRUCT(ids);
+ ok = sids_to_unixids(&global_sid_System, 1, &ids);
+ if (ok) {
+ switch (ids.type) {
+ case ID_TYPE_BOTH:
+ SY_U_sid = &global_sid_System;
+ SY_G_sid = &global_sid_System;
+ break;
+ case ID_TYPE_UID:
+ SY_U_sid = &global_sid_System;
+ break;
+ case ID_TYPE_GID:
+ SY_G_sid = &global_sid_System;
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
+ if (owner_sid == NULL) {
+ owner_sid = BA_U_sid;
+ }
+
+ if (owner_sid == NULL) {
+ owner_sid = SY_U_sid;
+ }
+
if (group_sid == NULL) {
- group_sid = &fsp->conn->session_info->security_token->sids[PRIMARY_GROUP_SID_INDEX];
+ group_sid = SY_G_sid;
}
- status = se_create_child_secdesc(ctx,
+ if (try_system && group_sid == NULL) {
+ group_sid = BA_G_sid;
+ }
+
+ if (owner_sid == NULL) {
+ owner_sid = &token->sids[PRIMARY_USER_SID_INDEX];
+ }
+ if (group_sid == NULL) {
+ if (token->num_sids == PRIMARY_GROUP_SID_INDEX) {
+ group_sid = &token->sids[PRIMARY_USER_SID_INDEX];
+ } else {
+ group_sid = &token->sids[PRIMARY_GROUP_SID_INDEX];
+ }
+ }
+
+ status = se_create_child_secdesc(frame,
&psd,
&size,
parent_desc,
group_sid,
fsp->is_directory);
if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(frame);
return status;
}
if (inherit_owner) {
unbecome_root();
}
+ TALLOC_FREE(frame);
return status;
}
}
/* 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)) {
+ smb_fname_base = synthetic_smb_fname(talloc_tos(),
+ smb_fname->base_name,
+ NULL, NULL);
+ if (smb_fname_base == NULL) {
+ status = NT_STATUS_NO_MEMORY;
goto fail;
}
git.samba.org / mat / samba.git / blobdiff