static void linux_release_kernel_oplock(struct kernel_oplocks *ctx,
files_struct *fsp, int oplock_type)
{
if (DEBUGLVL(10)) {
/*
* Check and print out the current kernel
* oplock state of this file.
*/
int state = fcntl(fsp->fh->fd, F_GETLEASE, 0);
dbgtext("linux_release_kernel_oplock: file %s, file_id = %s "
"gen_id = %lu has kernel oplock state "
"of %x.\n", fsp_str_dbg(fsp),
file_id_string_tos(&fsp->file_id),
fsp->fh->gen_id, state );
}
/*
* Remove the kernel oplock on this file.
*/
if ( SMB_VFS_LINUX_SETLEASE(fsp, F_UNLCK) == -1) {
if (DEBUGLVL(0)) {
dbgtext("linux_release_kernel_oplock: Error when "
"removing kernel oplock on file " );
dbgtext("%s, file_id = %s, gen_id = %lu. "
"Error was %s\n", fsp_str_dbg(fsp),
file_id_string_tos(&fsp->file_id),
fsp->fh->gen_id, strerror(errno) );
}
}
}
/*
* Deal with a reply when a break-to-level II was sent.
*/
bool downgrade_oplock(files_struct *fsp)
{
bool ret;
struct share_mode_lock *lck;
DEBUG(10, ("downgrade_oplock called for %s\n",
fsp_str_dbg(fsp)));
lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
if (lck == NULL) {
DEBUG(0,("downgrade_oplock: failed to lock share entry for "
"file %s\n", fsp_str_dbg(fsp)));
return False;
}
ret = downgrade_share_oplock(lck, fsp);
if (!ret) {
DEBUG(0,("downgrade_oplock: failed to downgrade share oplock "
"for file %s, %s, file_id %s\n",
fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
file_id_string_tos(&fsp->file_id)));
}
downgrade_file_oplock(fsp);
ret = update_num_read_oplocks(fsp, lck);
if (!ret) {
DEBUG(0, ("%s: update_num_read_oplocks failed for "
"file %s, %s, %s\n",
__func__, fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
file_id_string_tos(&fsp->file_id)));
}
TALLOC_FREE(lck);
return ret;
}
static bool irix_set_kernel_oplock(struct kernel_oplocks *_ctx,
files_struct *fsp, int oplock_type)
{
struct irix_oplocks_context *ctx = talloc_get_type(_ctx->private_data,
struct irix_oplocks_context);
if (sys_fcntl_long(fsp->fh->fd, F_OPLKREG, ctx->write_fd) == -1) {
if(errno != EAGAIN) {
DEBUG(0,("irix_set_kernel_oplock: Unable to get "
"kernel oplock on file %s, file_id %s "
"gen_id = %ul. Error was %s\n",
fsp_str_dbg(fsp),
file_id_string_tos(&fsp->file_id),
fsp->fh->gen_id,
strerror(errno) ));
} else {
DEBUG(5,("irix_set_kernel_oplock: Refused oplock on "
"file %s, fd = %d, file_id = %s, "
"gen_id = %ul. Another process had the file "
"open.\n",
fsp_str_dbg(fsp), fsp->fh->fd,
file_id_string_tos(&fsp->file_id),
fsp->fh->gen_id ));
}
return False;
}
DEBUG(10,("irix_set_kernel_oplock: got kernel oplock on file %s, file_id = %s "
"gen_id = %ul\n",
fsp_str_dbg(fsp), file_id_string_tos(&fsp->file_id),
fsp->fh->gen_id));
return True;
}
static void irix_release_kernel_oplock(struct kernel_oplocks *_ctx,
files_struct *fsp, int oplock_type)
{
if (DEBUGLVL(10)) {
/*
* Check and print out the current kernel
* oplock state of this file.
*/
int state = sys_fcntl_long(fsp->fh->fd, F_OPLKACK, -1);
dbgtext("irix_release_kernel_oplock: file %s, file_id = %s"
"gen_id = %ul, has kernel oplock state "
"of %x.\n", fsp_str_dbg(fsp),
file_id_string_tos(&fsp->file_id),
fsp->fh->gen_id, state );
}
/*
* Remove the kernel oplock on this file.
*/
if(sys_fcntl_long(fsp->fh->fd, F_OPLKACK, OP_REVOKE) < 0) {
if( DEBUGLVL( 0 )) {
dbgtext("irix_release_kernel_oplock: Error when "
"removing kernel oplock on file " );
dbgtext("%s, file_id = %s gen_id = %ul. "
"Error was %s\n",
fsp_str_dbg(fsp),
file_id_string_tos(&fsp->file_id),
fsp->fh->gen_id,
strerror(errno) );
}
}
}
static NTSTATUS store_acl_blob_fsp(vfs_handle_struct *handle,
files_struct *fsp,
DATA_BLOB *pblob)
{
int ret;
int saved_errno = 0;
DEBUG(10,("store_acl_blob_fsp: storing blob length %u on file %s\n",
(unsigned int)pblob->length, fsp_str_dbg(fsp)));
become_root();
if (fsp->fh->fd != -1) {
ret = SMB_VFS_FSETXATTR(fsp, XATTR_NTACL_NAME,
pblob->data, pblob->length, 0);
} else {
ret = SMB_VFS_SETXATTR(fsp->conn, fsp->fsp_name->base_name,
XATTR_NTACL_NAME,
pblob->data, pblob->length, 0);
}
if (ret) {
saved_errno = errno;
}
unbecome_root();
if (ret) {
DEBUG(5, ("store_acl_blob_fsp: setting attr failed for file %s"
"with error %s\n",
fsp_str_dbg(fsp),
strerror(saved_errno) ));
errno = saved_errno;
return map_nt_error_from_unix(saved_errno);
}
return NT_STATUS_OK;
}
/*
* Deal with a reply when a break-to-level II was sent.
*/
bool downgrade_oplock(files_struct *fsp)
{
bool ret;
struct share_mode_lock *lck;
struct byte_range_lock *brl;
DEBUG(10, ("downgrade_oplock called for %s\n",
fsp_str_dbg(fsp)));
lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
if (lck == NULL) {
DEBUG(0,("downgrade_oplock: failed to lock share entry for "
"file %s\n", fsp_str_dbg(fsp)));
return False;
}
ret = downgrade_share_oplock(lck, fsp);
if (!ret) {
DEBUG(0,("downgrade_oplock: failed to downgrade share oplock "
"for file %s, %s, file_id %s\n",
fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
file_id_string_tos(&fsp->file_id)));
}
downgrade_file_oplock(fsp);
brl = brl_get_locks(talloc_tos(), fsp);
if (brl != NULL) {
brl_set_have_read_oplocks(brl, true);
TALLOC_FREE(brl);
}
TALLOC_FREE(lck);
return ret;
}
NTSTATUS can_set_delete_on_close(files_struct *fsp, uint32 dosmode)
{
/*
* Only allow delete on close for writable files.
*/
if ((dosmode & FILE_ATTRIBUTE_READONLY) &&
!lp_delete_readonly(SNUM(fsp->conn))) {
DEBUG(10,("can_set_delete_on_close: file %s delete on close "
"flag set but file attribute is readonly.\n",
fsp_str_dbg(fsp)));
return NT_STATUS_CANNOT_DELETE;
}
/*
* Only allow delete on close for writable shares.
*/
if (!CAN_WRITE(fsp->conn)) {
DEBUG(10,("can_set_delete_on_close: file %s delete on "
"close flag set but write access denied on share.\n",
fsp_str_dbg(fsp)));
return NT_STATUS_ACCESS_DENIED;
}
/*
* Only allow delete on close for files/directories opened with delete
* intent.
*/
if (!(fsp->access_mask & DELETE_ACCESS)) {
DEBUG(10,("can_set_delete_on_close: file %s delete on "
"close flag set but delete access denied.\n",
fsp_str_dbg(fsp)));
return NT_STATUS_ACCESS_DENIED;
}
/* Don't allow delete on close for non-empty directories. */
if (fsp->is_directory) {
SMB_ASSERT(!is_ntfs_stream_smb_fname(fsp->fsp_name));
/* Or the root of a share. */
if (ISDOT(fsp->fsp_name->base_name)) {
DEBUG(10,("can_set_delete_on_close: can't set delete on "
"close for the root of a share.\n"));
return NT_STATUS_ACCESS_DENIED;
}
return can_delete_directory(fsp->conn,
fsp->fsp_name->base_name);
}
return NT_STATUS_OK;
}
void reduce_windows_lock_ref_count(files_struct *fsp, unsigned int dcount)
{
struct lock_ref_count_key tmp;
struct db_record *rec;
int lock_ref_count = 0;
NTSTATUS status;
rec = posix_pending_close_db->fetch_locked(
posix_pending_close_db, talloc_tos(),
locking_ref_count_key_fsp(fsp, &tmp));
SMB_ASSERT((rec != NULL)
&& (rec->value.dptr != NULL)
&& (rec->value.dsize == sizeof(lock_ref_count)));
memcpy(&lock_ref_count, rec->value.dptr, sizeof(lock_ref_count));
SMB_ASSERT(lock_ref_count > 0);
lock_ref_count -= dcount;
status = rec->store(rec, make_tdb_data((uint8 *)&lock_ref_count,
sizeof(lock_ref_count)), 0);
SMB_ASSERT(NT_STATUS_IS_OK(status));
TALLOC_FREE(rec);
DEBUG(10,("reduce_windows_lock_ref_count for file now %s = %d\n",
fsp_str_dbg(fsp), lock_ref_count));
}
files_struct *file_find_dif(struct smbd_server_connection *sconn,
struct file_id id, unsigned long gen_id)
{
int count=0;
files_struct *fsp;
if (gen_id == 0) {
return NULL;
}
for (fsp=sconn->files; fsp; fsp=fsp->next,count++) {
/* We can have a fsp->fh->fd == -1 here as it could be a stat open. */
if (file_id_equal(&fsp->file_id, &id) &&
fsp->fh->gen_id == gen_id ) {
if (count > 10) {
DLIST_PROMOTE(sconn->files, fsp);
}
/* Paranoia check. */
if ((fsp->fh->fd == -1) &&
(fsp->oplock_type != NO_OPLOCK)) {
DEBUG(0,("file_find_dif: file %s file_id = "
"%s, gen = %u oplock_type = %u is a "
"stat open with oplock type !\n",
fsp_str_dbg(fsp),
file_id_string_tos(&fsp->file_id),
(unsigned int)fsp->fh->gen_id,
(unsigned int)fsp->oplock_type ));
smb_panic("file_find_dif");
}
return fsp;
}
}
return NULL;
}
static int streams_xattr_fstat(vfs_handle_struct *handle, files_struct *fsp,
SMB_STRUCT_STAT *sbuf)
{
struct smb_filename *smb_fname_base = NULL;
int ret = -1;
struct stream_io *io = (struct stream_io *)
VFS_FETCH_FSP_EXTENSION(handle, fsp);
if (io == NULL || fsp->base_fsp == NULL) {
return SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
}
DBG_DEBUG("streams_xattr_fstat called for %s\n", fsp_str_dbg(io->fsp));
if (!streams_xattr_recheck(io)) {
return -1;
}
/* Create an smb_filename with stream_name == NULL. */
smb_fname_base = synthetic_smb_fname(talloc_tos(),
io->base,
NULL,
NULL,
fsp->fsp_name->flags);
if (smb_fname_base == NULL) {
errno = ENOMEM;
return -1;
}
if (smb_fname_base->flags & SMB_FILENAME_POSIX_PATH) {
ret = SMB_VFS_LSTAT(handle->conn, smb_fname_base);
} else {
ret = SMB_VFS_STAT(handle->conn, smb_fname_base);
}
*sbuf = smb_fname_base->st;
if (ret == -1) {
TALLOC_FREE(smb_fname_base);
return -1;
}
sbuf->st_ex_size = get_xattr_size(handle->conn,
smb_fname_base, io->xattr_name);
if (sbuf->st_ex_size == -1) {
TALLOC_FREE(smb_fname_base);
SET_STAT_INVALID(*sbuf);
return -1;
}
DEBUG(10, ("sbuf->st_ex_size = %d\n", (int)sbuf->st_ex_size));
sbuf->st_ex_ino = stream_inode(sbuf, io->xattr_name);
sbuf->st_ex_mode &= ~S_IFMT;
sbuf->st_ex_mode &= ~S_IFDIR;
sbuf->st_ex_mode |= S_IFREG;
sbuf->st_ex_blocks = sbuf->st_ex_size / STAT_ST_BLOCKSIZE + 1;
TALLOC_FREE(smb_fname_base);
return 0;
}
int vfs_fill_sparse(files_struct *fsp, SMB_OFF_T len)
{
int ret;
SMB_STRUCT_STAT st;
SMB_OFF_T offset;
size_t total;
size_t num_to_write;
ssize_t pwrite_ret;
ret = SMB_VFS_FSTAT(fsp, &st);
if (ret == -1) {
return ret;
}
if (len <= st.st_ex_size) {
return 0;
}
DEBUG(10,("vfs_fill_sparse: write zeros in file %s from len %.0f to "
"len %.0f (%.0f bytes)\n", fsp_str_dbg(fsp),
(double)st.st_ex_size, (double)len,
(double)(len - st.st_ex_size)));
contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_FILL_SPARSE);
flush_write_cache(fsp, SIZECHANGE_FLUSH);
if (!sparse_buf) {
sparse_buf = SMB_CALLOC_ARRAY(char, SPARSE_BUF_WRITE_SIZE);
if (!sparse_buf) {
errno = ENOMEM;
ret = -1;
goto out;
}
}
static NTSTATUS store_acl_blob_fsp(vfs_handle_struct *handle,
files_struct *fsp,
DATA_BLOB *pblob)
{
uint8_t id_buf[16];
struct file_id id;
TDB_DATA data;
struct db_context *db = acl_db;
struct db_record *rec;
NTSTATUS status;
DEBUG(10,("store_acl_blob_fsp: storing blob length %u on file %s\n",
(unsigned int)pblob->length, fsp_str_dbg(fsp)));
status = vfs_stat_fsp(fsp);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
id = vfs_file_id_from_sbuf(handle->conn, &fsp->fsp_name->st);
/* For backwards compatibility only store the dev/inode. */
push_file_id_16((char *)id_buf, &id);
rec = dbwrap_fetch_locked(db, talloc_tos(),
make_tdb_data(id_buf,
sizeof(id_buf)));
if (rec == NULL) {
DEBUG(0, ("store_acl_blob_fsp_tdb: fetch_lock failed\n"));
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
data.dptr = pblob->data;
data.dsize = pblob->length;
return dbwrap_record_store(rec, data, 0);
}
static void add_fd_to_close_entry(files_struct *fsp)
{
struct db_record *rec;
uint8_t *new_data;
NTSTATUS status;
rec = posix_pending_close_db->fetch_locked(
posix_pending_close_db, talloc_tos(),
fd_array_key_fsp(fsp));
SMB_ASSERT(rec != NULL);
new_data = talloc_array(
rec, uint8_t, rec->value.dsize + sizeof(fsp->fh->fd));
SMB_ASSERT(new_data != NULL);
memcpy(new_data, rec->value.dptr, rec->value.dsize);
memcpy(new_data + rec->value.dsize,
&fsp->fh->fd, sizeof(fsp->fh->fd));
status = rec->store(
rec, make_tdb_data(new_data,
rec->value.dsize + sizeof(fsp->fh->fd)), 0);
SMB_ASSERT(NT_STATUS_IS_OK(status));
TALLOC_FREE(rec);
DEBUG(10,("add_fd_to_close_entry: added fd %d file %s\n",
fsp->fh->fd, fsp_str_dbg(fsp)));
}
void trigger_write_time_update_immediate(struct files_struct *fsp)
{
struct smb_file_time ft;
if (fsp->posix_open) {
/* Don't use delayed writes on POSIX files. */
return;
}
if (fsp->write_time_forced) {
/*
* No point - "sticky" write times
* in effect.
*/
return;
}
TALLOC_FREE(fsp->update_write_time_event);
DEBUG(5, ("Update write time immediate on %s\n",
fsp_str_dbg(fsp)));
/* After an immediate update, reset the trigger. */
fsp->update_write_time_triggered = true;
fsp->update_write_time_on_close = false;
ZERO_STRUCT(ft);
ft.mtime = timespec_current();
/* Update the time in the open file db. */
(void)set_write_time(fsp->file_id, ft.mtime);
/* Now set on disk - takes care of notify. */
(void)smb_set_file_time(fsp->conn, fsp, fsp->fsp_name, &ft, false);
}
ssize_t read_file(files_struct *fsp,char *data,SMB_OFF_T pos,size_t n)
{
ssize_t ret=0,readret;
/* you can't read from print files */
if (fsp->print_file) {
errno = EBADF;
return -1;
}
/*
* Serve from write cache if we can.
*/
if(read_from_write_cache(fsp, data, pos, n)) {
fsp->fh->pos = pos + n;
fsp->fh->position_information = fsp->fh->pos;
return n;
}
flush_write_cache(fsp, READ_FLUSH);
fsp->fh->pos = pos;
if (n > 0) {
#ifdef DMF_FIX
int numretries = 3;
tryagain:
readret = SMB_VFS_PREAD(fsp,data,n,pos);
if (readret == -1) {
if ((errno == EAGAIN) && numretries) {
DEBUG(3,("read_file EAGAIN retry in 10 seconds\n"));
(void)sleep(10);
--numretries;
goto tryagain;
}
return -1;
}
#else /* NO DMF fix. */
readret = SMB_VFS_PREAD(fsp,data,n,pos);
if (readret == -1) {
return -1;
}
#endif
if (readret > 0) {
ret += readret;
}
}
DEBUG(10,("read_file (%s): pos = %.0f, size = %lu, returned %lu\n",
fsp_str_dbg(fsp), (double)pos, (unsigned long)n, (long)ret));
fsp->fh->pos += ret;
fsp->fh->position_information = fsp->fh->pos;
return(ret);
}
NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err)
{
struct smbd_smb2_read_state *state = tevent_req_data(req,
struct smbd_smb2_read_state);
files_struct *fsp = state->fsp;
if (nread < 0) {
NTSTATUS status = map_nt_error_from_unix(err);
DEBUG( 3,( "smb2_read_complete: file %s nread = %d. "
"Error = %s (NTSTATUS %s)\n",
fsp_str_dbg(fsp),
(int)nread,
strerror(err),
nt_errstr(status)));
return status;
}
if (nread == 0 && state->in_length != 0) {
DEBUG(5,("smb2_read_complete: read_file[%s] end of file\n",
fsp_str_dbg(fsp)));
return NT_STATUS_END_OF_FILE;
}
if (nread < state->in_minimum) {
DEBUG(5,("smb2_read_complete: read_file[%s] read less %d than "
"minimum requested %u. Returning end of file\n",
fsp_str_dbg(fsp),
(int)nread,
(unsigned int)state->in_minimum));
return NT_STATUS_END_OF_FILE;
}
DEBUG(3,("smbd_smb2_read: fnum=[%d/%s] length=%lu offset=%lu read=%lu\n",
fsp->fnum,
fsp_str_dbg(fsp),
(unsigned long)state->in_length,
(unsigned long)state->in_offset,
(unsigned long)nread));
state->out_data.length = nread;
state->out_remaining = 0;
return NT_STATUS_OK;
}
static NTSTATUS inherit_new_acl(vfs_handle_struct *handle,
files_struct *fsp,
struct security_descriptor *parent_desc,
bool is_directory)
{
TALLOC_CTX *ctx = talloc_tos();
NTSTATUS status = NT_STATUS_OK;
struct security_descriptor *psd = NULL;
size_t size;
if (!sd_has_inheritable_components(parent_desc, is_directory)) {
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);
}
status = se_create_child_secdesc(ctx,
&psd,
&size,
parent_desc,
&handle->conn->server_info->ptok->user_sids[PRIMARY_USER_SID_INDEX],
&handle->conn->server_info->ptok->user_sids[PRIMARY_GROUP_SID_INDEX],
is_directory);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (DEBUGLEVEL >= 10) {
DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
fsp_str_dbg(fsp) ));
NDR_PRINT_DEBUG(security_descriptor, parent_desc);
}
return SMB_VFS_FSET_NT_ACL(fsp,
(OWNER_SECURITY_INFORMATION |
GROUP_SECURITY_INFORMATION |
DACL_SECURITY_INFORMATION),
psd);
}
static NTSTATUS update_write_time_on_close(struct files_struct *fsp)
{
struct smb_file_time ft;
NTSTATUS status;
struct share_mode_lock *lck = NULL;
ZERO_STRUCT(ft);
if (!fsp->update_write_time_on_close) {
return NT_STATUS_OK;
}
if (null_timespec(fsp->close_write_time)) {
fsp->close_write_time = timespec_current();
}
/* Ensure we have a valid stat struct for the source. */
status = vfs_stat_fsp(fsp);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (!VALID_STAT(fsp->fsp_name->st)) {
/* if it doesn't seem to be a real file */
return NT_STATUS_OK;
}
/* On close if we're changing the real file time we
* must update it in the open file db too. */
(void)set_write_time(fsp->file_id, fsp->close_write_time);
lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL, NULL);
if (lck) {
/* Close write times overwrite sticky write times
so we must replace any sticky write time here. */
if (!null_timespec(lck->changed_write_time)) {
(void)set_sticky_write_time(fsp->file_id, fsp->close_write_time);
}
TALLOC_FREE(lck);
}
ft.mtime = fsp->close_write_time;
/* We must use NULL for the fsp handle here, as smb_set_file_time()
checks the fsp access_mask, which may not include FILE_WRITE_ATTRIBUTES.
As this is a close based update, we are not directly changing the
file attributes from a client call, but indirectly from a write. */
status = smb_set_file_time(fsp->conn, NULL, fsp->fsp_name, &ft, false);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10,("update_write_time_on_close: smb_set_file_time "
"on file %s returned %s\n",
fsp_str_dbg(fsp),
nt_errstr(status)));
return status;
}
return status;
}
static bool linux_set_kernel_oplock(struct kernel_oplocks *ctx,
files_struct *fsp, int oplock_type)
{
if ( SMB_VFS_LINUX_SETLEASE(fsp, F_WRLCK) == -1) {
DEBUG(3,("linux_set_kernel_oplock: Refused oplock on file %s, "
"fd = %d, file_id = %s. (%s)\n",
fsp_str_dbg(fsp), fsp->fh->fd,
file_id_string_tos(&fsp->file_id),
strerror(errno)));
return False;
}
DEBUG(3,("linux_set_kernel_oplock: got kernel oplock on file %s, "
"file_id = %s gen_id = %lu\n",
fsp_str_dbg(fsp), file_id_string_tos(&fsp->file_id),
fsp->fh->gen_id));
return True;
}
void smbd_cancel_pending_lock_requests_by_fid(files_struct *fsp,
struct byte_range_lock *br_lck,
enum file_close_type close_type)
{
struct smbd_server_connection *sconn = fsp->conn->sconn;
struct blocking_lock_record *blr, *blr_cancelled, *next = NULL;
if (sconn->using_smb2) {
cancel_pending_lock_requests_by_fid_smb2(fsp,
br_lck,
close_type);
return;
}
for(blr = sconn->smb1.locks.blocking_lock_queue; blr; blr = next) {
unsigned char locktype = 0;
next = blr->next;
if (blr->fsp->fnum != fsp->fnum) {
continue;
}
if (blr->req->cmd == SMBlockingX) {
locktype = CVAL(blr->req->vwv+3, 0);
}
DEBUG(10, ("remove_pending_lock_requests_by_fid - removing "
"request type %d for file %s, %s\n",
blr->req->cmd, fsp_str_dbg(fsp), fsp_fnum_dbg(fsp)));
blr_cancelled = blocking_lock_cancel_smb1(fsp,
blr->smblctx,
blr->offset,
blr->count,
blr->lock_flav,
locktype,
NT_STATUS_RANGE_NOT_LOCKED);
SMB_ASSERT(blr_cancelled == blr);
brl_lock_cancel(br_lck,
blr->smblctx,
messaging_server_id(sconn->msg_ctx),
blr->offset,
blr->count,
blr->lock_flav,
blr);
/* We're closing the file fsp here, so ensure
* we don't have a dangling pointer. */
blr->fsp = NULL;
}
}
static int wcp_file_size_change(files_struct *fsp)
{
int ret;
write_cache *wcp = fsp->wcp;
wcp->file_size = wcp->offset + wcp->data_size;
ret = SMB_VFS_FTRUNCATE(fsp, wcp->file_size);
if (ret == -1) {
DEBUG(0,("wcp_file_size_change (%s): ftruncate of size %.0f "
"error %s\n", fsp_str_dbg(fsp),
(double)wcp->file_size, strerror(errno)));
}
return ret;
}
int aixjfs2_sys_acl_set_fd(vfs_handle_struct *handle,
files_struct *fsp,
SMB_ACL_T theacl)
{
struct acl *acl_aixc;
acl_type_t acl_type_info;
int rc;
DEBUG(10, ("aixjfs2_sys_acl_set_fd invoked for %s", fsp_str_dbg(fsp)));
rc = aixjfs2_query_acl_support(fsp->fsp_name->base_name, ACL_AIXC,
&acl_type_info);
if (rc) {
DEBUG(8, ("jfs2_set_nt_acl: AIXC support not found\n"));
return -1;
}
acl_aixc = aixacl_smb_to_aixacl(SMB_ACL_TYPE_ACCESS, theacl);
if (!acl_aixc)
return -1;
rc = aclx_fput(
fsp->fh->fd,
SET_ACL, /* set only the ACL, not mode bits */
acl_type_info,
acl_aixc,
acl_aixc->acl_len,
0
);
if (rc) {
DEBUG(2, ("aclx_fput failed with %s for %s\n",
strerror(errno), fsp_str_dbg(fsp)));
return -1;
}
return 0;
}
bool remove_oplock(files_struct *fsp)
{
bool ret;
struct share_mode_lock *lck;
DEBUG(10, ("remove_oplock called for %s\n",
fsp_str_dbg(fsp)));
/* Remove the oplock flag from the sharemode. */
lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
if (lck == NULL) {
DEBUG(0,("remove_oplock: failed to lock share entry for "
"file %s\n", fsp_str_dbg(fsp)));
return False;
}
ret = remove_share_oplock(lck, fsp);
if (!ret) {
DEBUG(0,("remove_oplock: failed to remove share oplock for "
"file %s, %s, %s\n",
fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
file_id_string_tos(&fsp->file_id)));
}
release_file_oplock(fsp);
ret = update_num_read_oplocks(fsp, lck);
if (!ret) {
DEBUG(0, ("%s: update_num_read_oplocks failed for "
"file %s, %s, %s\n",
__func__, fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
file_id_string_tos(&fsp->file_id)));
}
TALLOC_FREE(lck);
return ret;
}
static void oplock_timeout_handler(struct tevent_context *ctx,
struct tevent_timer *te,
struct timeval now,
void *private_data)
{
files_struct *fsp = (files_struct *)private_data;
SMB_ASSERT(fsp->sent_oplock_break != NO_BREAK_SENT);
/* Remove the timed event handler. */
TALLOC_FREE(fsp->oplock_timeout);
DEBUG(0, ("Oplock break failed for file %s -- replying anyway\n",
fsp_str_dbg(fsp)));
remove_oplock(fsp);
}
static files_struct *initial_break_processing(
struct smbd_server_connection *sconn, struct file_id id,
unsigned long file_id)
{
files_struct *fsp = NULL;
DEBUG(3, ("initial_break_processing: called for %s/%u\n"
"Current oplocks_open (exclusive = %d, levelII = %d)\n",
file_id_string_tos(&id), (int)file_id,
sconn->oplocks.exclusive_open,
sconn->oplocks.level_II_open));
/*
* We need to search the file open table for the
* entry containing this dev and inode, and ensure
* we have an oplock on it.
*/
fsp = file_find_dif(sconn, id, file_id);
if(fsp == NULL) {
/* The file could have been closed in the meantime - return success. */
DEBUG(3, ("initial_break_processing: cannot find open file "
"with file_id %s gen_id = %lu, allowing break to "
"succeed.\n", file_id_string_tos(&id), file_id));
return NULL;
}
/* Ensure we have an oplock on the file */
/*
* There is a potential race condition in that an oplock could
* have been broken due to another udp request, and yet there are
* still oplock break messages being sent in the udp message
* queue for this file. So return true if we don't have an oplock,
* as we may have just freed it.
*/
if(fsp->oplock_type == NO_OPLOCK) {
DEBUG(3, ("initial_break_processing: file %s (file_id = %s "
"gen_id = %lu) has no oplock. Allowing break to "
"succeed regardless.\n", fsp_str_dbg(fsp),
file_id_string_tos(&id), fsp->fh->gen_id));
return NULL;
}
return fsp;
}
int print_spool_write(files_struct *fsp,
const char *data, uint32_t size,
SMB_OFF_T offset, uint32_t *written)
{
SMB_STRUCT_STAT st;
ssize_t n;
int ret;
*written = 0;
/* first of all stat file to find out if it is still there.
* spoolss may have deleted it to signal someone has killed
* the job through it's interface */
if (sys_fstat(fsp->fh->fd, &st, false) != 0) {
ret = errno;
DEBUG(3, ("printfile_offset: sys_fstat failed on %s (%s)\n",
fsp_str_dbg(fsp), strerror(ret)));
return ret;
}
/* check if the file is unlinked, this will signal spoolss has
* killed it, just return an error and close the file */
if (st.st_ex_nlink == 0) {
close(fsp->fh->fd);
return EBADF;
}
/* When print files go beyond 4GB, the 32-bit offset sent in
* old SMBwrite calls is relative to the current 4GB chunk
* we're writing to.
* Discovered by Sebastian Kloska <*****@*****.**>.
*/
if (offset < 0xffffffff00000000LL) {
offset = (st.st_ex_size & 0xffffffff00000000LL) + offset;
}
n = write_data_at_offset(fsp->fh->fd, data, size, offset);
if (n == -1) {
ret = errno;
print_spool_terminate(fsp->conn, fsp->print_file);
} else {
*written = n;
ret = 0;
}
return ret;
}
NTSTATUS do_lock_cancel(files_struct *fsp,
uint64 smblctx,
uint64_t count,
uint64_t offset,
enum brl_flavour lock_flav,
struct blocking_lock_record *blr)
{
bool ok = False;
struct byte_range_lock *br_lck = NULL;
if (!fsp->can_lock) {
return fsp->is_directory ?
NT_STATUS_INVALID_DEVICE_REQUEST : NT_STATUS_INVALID_HANDLE;
}
if (!lp_locking(fsp->conn->params)) {
return NT_STATUS_DOS(ERRDOS, ERRcancelviolation);
}
DEBUG(10,("do_lock_cancel: cancel start=%.0f len=%.0f requested for %s file %s\n",
(double)offset, (double)count, fsp_fnum_dbg(fsp),
fsp_str_dbg(fsp)));
br_lck = brl_get_locks(talloc_tos(), fsp);
if (!br_lck) {
return NT_STATUS_NO_MEMORY;
}
ok = brl_lock_cancel(br_lck,
smblctx,
messaging_server_id(fsp->conn->sconn->msg_ctx),
offset,
count,
lock_flav,
blr);
TALLOC_FREE(br_lck);
if (!ok) {
DEBUG(10,("do_lock_cancel: returning ERRcancelviolation.\n" ));
return NT_STATUS_DOS(ERRDOS, ERRcancelviolation);
}
decrement_current_lock_count(fsp, lock_flav);
return NT_STATUS_OK;
}
NTSTATUS do_unlock(struct messaging_context *msg_ctx,
files_struct *fsp,
uint64_t smblctx,
uint64_t count,
uint64_t offset,
enum brl_flavour lock_flav)
{
bool ok = False;
struct byte_range_lock *br_lck = NULL;
if (!fsp->can_lock) {
return fsp->is_directory ? NT_STATUS_INVALID_DEVICE_REQUEST : NT_STATUS_INVALID_HANDLE;
}
if (!lp_locking(fsp->conn->params)) {
return NT_STATUS_OK;
}
DEBUG(10,("do_unlock: unlock start=%.0f len=%.0f requested for %s file %s\n",
(double)offset, (double)count, fsp_fnum_dbg(fsp),
fsp_str_dbg(fsp)));
br_lck = brl_get_locks(talloc_tos(), fsp);
if (!br_lck) {
return NT_STATUS_NO_MEMORY;
}
ok = brl_unlock(msg_ctx,
br_lck,
smblctx,
messaging_server_id(fsp->conn->sconn->msg_ctx),
offset,
count,
lock_flav);
TALLOC_FREE(br_lck);
if (!ok) {
DEBUG(10,("do_unlock: returning ERRlock.\n" ));
return NT_STATUS_RANGE_NOT_LOCKED;
}
decrement_current_lock_count(fsp, lock_flav);
return NT_STATUS_OK;
}
void trigger_write_time_update(struct files_struct *fsp)
{
int delay;
if (fsp->posix_open) {
/* Don't use delayed writes on POSIX files. */
return;
}
if (fsp->write_time_forced) {
/* No point - "sticky" write times
* in effect.
*/
return;
}
/* We need to remember someone did a write
* and update to current time on close. */
fsp->update_write_time_on_close = true;
if (fsp->update_write_time_triggered) {
/*
* We only update the write time after 2 seconds
* on the first normal write. After that
* no other writes affect this until close.
*/
return;
}
fsp->update_write_time_triggered = true;
delay = lp_parm_int(SNUM(fsp->conn),
"smbd", "writetimeupdatedelay",
WRITE_TIME_UPDATE_USEC_DELAY);
DEBUG(5, ("Update write time %d usec later on %s\n",
delay, fsp_str_dbg(fsp)));
/* trigger the update 2 seconds later */
fsp->update_write_time_event =
event_add_timed(smbd_event_context(), NULL,
timeval_current_ofs(0, delay),
update_write_time_handler, fsp);
}
void update_write_time_handler(struct event_context *ctx,
struct timed_event *te,
struct timeval now,
void *private_data)
{
files_struct *fsp = (files_struct *)private_data;
DEBUG(5, ("Update write time on %s\n", fsp_str_dbg(fsp)));
/* change the write time in the open file db. */
(void)set_write_time(fsp->file_id, timespec_current());
/* And notify. */
notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
FILE_NOTIFY_CHANGE_LAST_WRITE, fsp->fsp_name->base_name);
/* Remove the timed event handler. */
TALLOC_FREE(fsp->update_write_time_event);
}
