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/*
* Unix SMB/CIFS implementation.
* Support for OneFS system interfaces.
*
* Copyright (C) Tim Prouty, 2008
*
* 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 "onefs.h"
#include <ifs/ifs_syscalls.h>
#include <isi_acl/isi_acl_util.h>
/*
* Initialize the sm_lock struct before passing it to ifs_createfile.
*/
static void smlock_init(connection_struct *conn, struct sm_lock *sml,
bool isexe, uint32_t access_mask, uint32_t share_access,
uint32_t create_options)
{
sml->sm_type.doc = false;
sml->sm_type.isexe = isexe;
sml->sm_type.statonly = is_stat_open(access_mask);
sml->sm_type.access_mask = access_mask;
sml->sm_type.share_access = share_access;
/*
* private_options was previously used for DENY_DOS/DENY_FCB checks in
* the kernel, but are now properly handled by fcb_or_dos_open. In
* these cases, ifs_createfile will return a sharing violation, which
* gives fcb_or_dos_open the chance to open a duplicate file handle.
*/
sml->sm_type.private_options = 0;
/* 1 second delay is handled in onefs_open.c by deferring the open */
sml->sm_timeout = timeval_set(0, 0);
}
static void smlock_dump(int debuglevel, const struct sm_lock *sml)
{
if (sml == NULL) {
DEBUG(debuglevel, ("sml == NULL\n"));
return;
}
DEBUG(debuglevel,
("smlock: doc=%s, isexec=%s, statonly=%s, access_mask=0x%x, "
"share_access=0x%x, private_options=0x%x timeout=%d/%d\n",
sml->sm_type.doc ? "True" : "False",
sml->sm_type.isexe ? "True" : "False",
sml->sm_type.statonly ? "True" : "False",
sml->sm_type.access_mask,
sml->sm_type.share_access,
sml->sm_type.private_options,
(int)sml->sm_timeout.tv_sec,
(int)sml->sm_timeout.tv_usec));
}
/*
* Return string value of onefs oplock types.
*/
static const char *onefs_oplock_str(enum oplock_type onefs_oplock_type)
{
switch (onefs_oplock_type) {
case OPLOCK_NONE:
return "OPLOCK_NONE";
case OPLOCK_EXCLUSIVE:
return "OPLOCK_EXCLUSIVE";
case OPLOCK_BATCH:
return "OPLOCK_BATCH";
case OPLOCK_SHARED:
return "OPLOCK_SHARED";
default:
break;
}
return "UNKNOWN";
}
/*
* Convert from onefs to samba oplock.
*/
static int onefs_oplock_to_samba_oplock(enum oplock_type onefs_oplock)
{
switch (onefs_oplock) {
case OPLOCK_NONE:
return NO_OPLOCK;
case OPLOCK_EXCLUSIVE:
return EXCLUSIVE_OPLOCK;
case OPLOCK_BATCH:
return BATCH_OPLOCK;
case OPLOCK_SHARED:
return LEVEL_II_OPLOCK;
default:
DEBUG(0, ("unknown oplock type %d found\n", onefs_oplock));
break;
}
return NO_OPLOCK;
}
/*
* Convert from samba to onefs oplock.
*/
static enum oplock_type onefs_samba_oplock_to_oplock(int samba_oplock_type)
{
if (BATCH_OPLOCK_TYPE(samba_oplock_type)) return OPLOCK_BATCH;
if (EXCLUSIVE_OPLOCK_TYPE(samba_oplock_type)) return OPLOCK_EXCLUSIVE;
if (LEVEL_II_OPLOCK_TYPE(samba_oplock_type)) return OPLOCK_SHARED;
return OPLOCK_NONE;
}
/**
* External interface to ifs_createfile
*/
int onefs_sys_create_file(connection_struct *conn,
int base_fd,
const char *path,
uint32_t access_mask,
uint32_t open_access_mask,
uint32_t share_access,
uint32_t create_options,
int flags,
mode_t mode,
int oplock_request,
uint64_t id,
struct security_descriptor *sd,
uint32_t dos_flags,
int *granted_oplock)
{
struct sm_lock sml, *psml = NULL;
enum oplock_type onefs_oplock;
enum oplock_type onefs_granted_oplock = OPLOCK_NONE;
struct ifs_security_descriptor ifs_sd = {}, *pifs_sd = NULL;
int secinfo = 0;
int ret_fd = -1;
uint32_t onefs_dos_attributes;
/* Setup security descriptor and get secinfo. */
if (sd != NULL) {
NTSTATUS status;
secinfo = (get_sec_info(sd) & IFS_SEC_INFO_KNOWN_MASK);
status = onefs_samba_sd_to_sd(secinfo, sd, &ifs_sd, SNUM(conn));
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("SD initialization failure: %s",
nt_errstr(status)));
errno = EINVAL;
goto out;
}
pifs_sd = &ifs_sd;
}
onefs_oplock = onefs_samba_oplock_to_oplock(oplock_request);
/* Temporary until oplock work is added to vfs_onefs */
onefs_oplock = OPLOCK_NONE;
/* Convert samba dos flags to UF_DOS_* attributes. */
onefs_dos_attributes = dos_attributes_to_stat_dos_flags(dos_flags);
DEBUG(10,("onefs_sys_create_file: base_fd = %d, "
"open_access_mask = 0x%x, flags = 0x%x, mode = 0x%x, "
"desired_oplock = %s, id = 0x%x, secinfo = 0x%x, sd = %p, "
"dos_attributes = 0x%x, path = %s\n", base_fd,
(unsigned int)open_access_mask,
(unsigned int)flags,
(unsigned int)mode,
onefs_oplock_str(onefs_oplock),
(unsigned int)id,
(unsigned int)secinfo, sd,
(unsigned int)onefs_dos_attributes, path));
/* Initialize smlock struct for files/dirs but not internal opens */
if (!(oplock_request & INTERNAL_OPEN_ONLY)) {
smlock_init(conn, &sml, is_executable(path), access_mask,
share_access, create_options);
psml = &sml;
}
smlock_dump(10, psml);
ret_fd = ifs_createfile(base_fd, path,
(enum ifs_ace_rights)open_access_mask, flags & ~O_ACCMODE, mode,
onefs_oplock, id, psml, secinfo, pifs_sd, onefs_dos_attributes,
&onefs_granted_oplock);
DEBUG(10,("onefs_sys_create_file(%s): ret_fd = %d, "
"onefs_granted_oplock = %s\n",
ret_fd < 0 ? strerror(errno) : "success", ret_fd,
onefs_oplock_str(onefs_granted_oplock)));
if (granted_oplock) {
*granted_oplock =
onefs_oplock_to_samba_oplock(onefs_granted_oplock);
}
out:
aclu_free_sd(pifs_sd, false);
return ret_fd;
}
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