2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 2006
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 abstract the various kernel interfaces to change notify into a
22 single Samba friendly interface
26 #include "system/filesys.h"
27 #include "ntvfs/sysdep/sys_notify.h"
28 #include "../lib/tevent/tevent.h"
29 #include "../lib/util/dlinklist.h"
30 #include "param/param.h"
32 /* list of registered backends */
33 static struct sys_notify_backend
*backends
;
34 static uint32_t num_backends
;
36 #define NOTIFY_BACKEND "notify:backend"
39 initialise a system change notify backend
41 _PUBLIC_
struct sys_notify_context
*sys_notify_context_create(struct share_config
*scfg
,
43 struct tevent_context
*ev
)
45 struct sys_notify_context
*ctx
;
49 if (num_backends
== 0) {
57 ctx
= talloc_zero(mem_ctx
, struct sys_notify_context
);
64 bname
= share_string_option(scfg
, NOTIFY_BACKEND
, NULL
);
67 bname
= backends
[0].name
;
69 bname
= "__unknown__";
73 for (i
=0;i
<num_backends
;i
++) {
74 char *enable_opt_name
;
77 enable_opt_name
= talloc_asprintf(mem_ctx
, "notify:%s",
79 enabled
= share_bool_option(scfg
, enable_opt_name
, true);
80 talloc_free(enable_opt_name
);
85 if (strcasecmp(backends
[i
].name
, bname
) == 0) {
86 bname
= backends
[i
].name
;
92 ctx
->notify_watch
= NULL
;
94 if (i
< num_backends
) {
95 ctx
->notify_watch
= backends
[i
].notify_watch
;
104 note that this call must modify the e->filter and e->subdir_filter
105 bits to remove ones handled by this backend. Any remaining bits will
106 be handled by the generic notify layer
108 _PUBLIC_ NTSTATUS
sys_notify_watch(struct sys_notify_context
*ctx
,
109 struct notify_entry
*e
,
110 sys_notify_callback_t callback
,
111 void *private_data
, void *handle
)
113 if (!ctx
->notify_watch
) {
114 return NT_STATUS_INVALID_SYSTEM_SERVICE
;
116 return ctx
->notify_watch(ctx
, e
, callback
, private_data
, handle
);
120 register a notify backend
122 _PUBLIC_ NTSTATUS
sys_notify_register(struct sys_notify_backend
*backend
)
124 struct sys_notify_backend
*b
;
125 b
= talloc_realloc(talloc_autofree_context(), backends
,
126 struct sys_notify_backend
, num_backends
+1);
127 NT_STATUS_HAVE_NO_MEMORY(b
);
129 backends
[num_backends
] = *backend
;
134 _PUBLIC_ NTSTATUS
sys_notify_init(void)
136 static bool initialized
= false;
137 extern NTSTATUS
sys_notify_inotify_init(void);
139 init_module_fn static_init
[] = { STATIC_sys_notify_MODULES
};
141 if (initialized
) return NT_STATUS_OK
;
144 run_init_functions(static_init
);