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-rw-r--r--source3/smbd/dmapi.c272
1 files changed, 0 insertions, 272 deletions
diff --git a/source3/smbd/dmapi.c b/source3/smbd/dmapi.c
index 0fa3a16760..2188924d4b 100644
--- a/source3/smbd/dmapi.c
+++ b/source3/smbd/dmapi.c
@@ -302,275 +302,3 @@ uint32 dmapi_file_flags(const char * const path)
}
#endif /* USE_DMAPI */
-/*
- Unix SMB/CIFS implementation.
- DMAPI Support routines
-
- Copyright (C) Silicon Graphics, Inc. 2006. All rights reserved.
- James Peach <jpeach@sgi.com>
-
- 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 2 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include "includes.h"
-
-#undef DBGC_CLASS
-#define DBGC_CLASS DBGC_DMAPI
-
-#if defined(HAVE_LIBDM)
-#if (defined(HAVE_XFS_DMAPI_H) || defined(HAVE_SYS_DMI_H))
-#define USE_DMAPI 1
-#endif
-#endif
-
-#ifndef USE_DMAPI
-
-int dmapi_init_session(void) { return -1; }
-uint32 dmapi_file_flags(const char * const path) { return 0; }
-BOOL dmapi_have_session(void) { return False; }
-
-#else /* USE_DMAPI */
-
-#ifdef HAVE_XFS_DMAPI_H
-#include <xfs/dmapi.h>
-#endif
-
-#ifdef HAVE_SYS_DMI_H
-#include <sys/dmi.h>
-#endif
-
-#define DMAPI_SESSION_NAME "samba"
-#define DMAPI_TRACE 10
-
-static dm_sessid_t dmapi_session = DM_NO_SESSION;
-
-/* Initialise the DMAPI interface. Make sure that we only end up initialising
- * once per process to avoid resource leaks across different DMAPI
- * implementations.
- */
-static int init_dmapi_service(void)
-{
- static pid_t lastpid;
-
- pid_t mypid;
-
- mypid = sys_getpid();
- if (mypid != lastpid) {
- char *version;
-
- lastpid = mypid;
- if (dm_init_service(&version) < 0) {
- return -1;
- }
-
- DEBUG(0, ("Initializing DMAPI: %s\n", version));
- }
-
- return 0;
-}
-
-BOOL dmapi_have_session(void)
-{
- return dmapi_session != DM_NO_SESSION;
-}
-
-static dm_sessid_t *realloc_session_list(dm_sessid_t * sessions, int count)
-{
- dm_sessid_t *nsessions;
-
- nsessions = TALLOC_REALLOC_ARRAY(NULL, sessions, dm_sessid_t, count);
- if (nsessions == NULL) {
- TALLOC_FREE(sessions);
- return NULL;
- }
-
- return nsessions;
-}
-
-/* Initialise DMAPI session. The session is persistant kernel state, so it
- * might already exist, in which case we merely want to reconnect to it. This
- * function should be called as root.
- */
-int dmapi_init_session(void)
-{
- char buf[DM_SESSION_INFO_LEN];
- size_t buflen;
-
- uint nsessions = 10;
- dm_sessid_t *sessions = NULL;
-
- int i, err;
-
- /* If we aren't root, something in the following will fail due to lack
- * of privileges. Aborting seems a little extreme.
- */
- SMB_WARN(getuid() == 0, "dmapi_init_session must be called as root");
-
- dmapi_session = DM_NO_SESSION;
- if (init_dmapi_service() < 0) {
- return -1;
- }
-
-retry:
-
- if ((sessions = realloc_session_list(sessions, nsessions)) == NULL) {
- return -1;
- }
-
- err = dm_getall_sessions(nsessions, sessions, &nsessions);
- if (err < 0) {
- if (errno == E2BIG) {
- nsessions *= 2;
- goto retry;
- }
-
- DEBUGADD(DMAPI_TRACE,
- ("failed to retrieve DMAPI sessions: %s\n",
- strerror(errno)));
- TALLOC_FREE(sessions);
- return -1;
- }
-
- for (i = 0; i < nsessions; ++i) {
- err = dm_query_session(sessions[i], sizeof(buf), buf, &buflen);
- buf[sizeof(buf) - 1] = '\0';
- if (err == 0 && strcmp(DMAPI_SESSION_NAME, buf) == 0) {
- dmapi_session = sessions[i];
- DEBUGADD(DMAPI_TRACE,
- ("attached to existing DMAPI session "
- "named '%s'\n", buf));
- break;
- }
- }
-
- TALLOC_FREE(sessions);
-
- /* No session already defined. */
- if (dmapi_session == DM_NO_SESSION) {
- err = dm_create_session(DM_NO_SESSION, DMAPI_SESSION_NAME,
- &dmapi_session);
- if (err < 0) {
- DEBUGADD(DMAPI_TRACE,
- ("failed to create new DMAPI session: %s\n",
- strerror(errno)));
- return -1;
- }
-
- DEBUGADD(DMAPI_TRACE,
- ("created new DMAPI session named '%s'\n",
- DMAPI_SESSION_NAME));
- }
-
- /* Note that we never end the DMAPI session. This enables child
- * processes to continue to use the session after we exit. It also lets
- * you run a second Samba server on different ports without any
- * conflict.
- */
-
- return 0;
-}
-
-/* Reattach to an existing dmapi session. Called from service processes that
- * might not be running as root.
- */
-static int reattach_dmapi_session(void)
-{
- char buf[DM_SESSION_INFO_LEN];
- size_t buflen;
-
- if (dmapi_session != DM_NO_SESSION ) {
- become_root();
-
- /* NOTE: On Linux, this call opens /dev/dmapi, costing us a
- * file descriptor. Ideally, we would close this when we fork.
- */
- if (init_dmapi_service() < 0) {
- dmapi_session = DM_NO_SESSION;
- unbecome_root();
- return -1;
- }
-
- if (dm_query_session(dmapi_session, sizeof(buf),
- buf, &buflen) < 0) {
- /* Session is stale. Disable DMAPI. */
- dmapi_session = DM_NO_SESSION;
- unbecome_root();
- return -1;
- }
-
- set_effective_capability(DMAPI_ACCESS_CAPABILITY);
-
- DEBUG(DMAPI_TRACE, ("reattached DMAPI session\n"));
- unbecome_root();
- return 0;
- }
-
- return 0;
-}
-
-uint32 dmapi_file_flags(const char * const path)
-{
- int err;
- dm_eventset_t events = {0};
- uint nevents;
-
- void *dm_handle;
- size_t dm_handle_len;
-
- uint32 flags = 0;
-
- if (dmapi_have_session()) {
- if (reattach_dmapi_session() < 0) {
- return 0;
- }
- }
-
- err = dm_path_to_handle(CONST_DISCARD(char *, path),
- &dm_handle, &dm_handle_len);
- if (err < 0) {
- DEBUG(DMAPI_TRACE, ("dm_path_to_handle(%s): %s\n",
- path, strerror(errno)));
- return 0;
- }
-
- err = dm_get_eventlist(dmapi_session, dm_handle, dm_handle_len,
- DM_NO_TOKEN, DM_EVENT_MAX, &events, &nevents);
- if (err < 0) {
- DEBUG(DMAPI_TRACE, ("dm_get_eventlist: %s\n",
- strerror(errno)));
- dm_handle_free(dm_handle, dm_handle_len);
- return 0;
- }
-
- /* We figure that the only reason a DMAPI application would be
- * interested in trapping read events is that part of the file is
- * offline.
- */
- DEBUG(DMAPI_TRACE, ("DMAPI event list for %s is %#llx\n",
- path, events));
- if (DMEV_ISSET(DM_EVENT_READ, events)) {
- flags = FILE_ATTRIBUTE_OFFLINE;
- }
-
- dm_handle_free(dm_handle, dm_handle_len);
-
- if (flags & FILE_ATTRIBUTE_OFFLINE) {
- DEBUG(DMAPI_TRACE, ("%s is OFFLINE\n", path));
- }
-
- return flags;
-}
-
-#endif /* USE_DMAPI */
generated by cgit (git 2.34.1) at 2024-11-01 19:06:58 +0000